# Mary (name)

Mary /ˈmɛəˌri/ is a feminine given name, the English form of the name Maria, which was in turn a Latin form of the Greek name Μαρία, María or Μαριάμ, Mariam, found in the Septuagint and New Testament. The latter reflects the original Hebrew pronunciation of the name מרים (Masoretic pronunciation Miryam), as attested by the Septuagint. The vowel "a" in a closed unaccented syllable later became "i", as seen in other names such as "Bil'am" (Balaam) and "Shimshon" (Samson).

## Etymology

The English name Mary arises by adoption of French Marie into Middle English. Wycliffe's Bible still has Marie, with the modern spelling current from the 16th century, found in the Tyndale Bible (1525), Coverdale Bible (1535) and later translations.
The name Mary may have originated from the Egyptian language; it is likely derivative of the root mr, meaning "love; beloved" (compare mry.t-ymn, "Merit-Amun", i.e. "beloved of Amun").
The name Mary was early etymologized as containing the Hebrew root mr, meaning "bitter" (cf. myrrh), or mry, meaning "rebellious". St. Jerome (writing c. 390), following Eusebius of Caesarea, translates the name as "drop of the sea" (stilla maris in Latin), from the Hebrew מר, mar, 'drop' (cf. Isaiah 40:15) and ים, yam, 'sea'. This translation was subsequently rendered stella maris ("star of the sea") due to scribal error, whence Our Lady's title Star of the Sea.

## Usage

Mary is among the top 100 names for baby girls born in Ireland, common among Christians and popular among Protestants specifically, owing to Queen Mary II. Mary did not come into common usage in Ireland until the 17th century, as the name was considered too holy to be used. Mary was the 179th most popular name for girls born in England and Wales in 2007.
In the United States, Mary was consistently the most popular name for girls from 1880 until 1961. It was still the most common name for women and girls in the United States in the 1990 census. Mary first fell below the top 100 most popular names in 2009. However, according to the Social Security Administration, Mary is the seventh most common given name in the United States, with 2.16 million individuals bearing this name as of 2023.
The name Mary remains more popular in the Southern United States than elsewhere in the country. Mary was the 15th most popular name for girls born in Alabama in 2007, the 22nd most popular name for girls born in Mississippi in 2007, the 44th most popular name for girls in North Carolina, the 33rd most popular name for girls in South Carolina, and the 26th most popular name for girls in Tennessee.

## People
### Biblical figures

* New Testament people named Mary:
** Mary, mother of Jesus
** Mary Magdalene, a disciple of Jesus
** Mary of Bethany, a follower of Jesus, considered by Western medieval tradition to be Mary Magdalene
** Mary of Clopas, a follower of Jesus
** Mary, mother of James the younger (or lesser)
** Mary, mother of John Mark
** Mary of Rome
** Salome (disciple), a follower of Jesus, in medieval tradition Mary Salome

### Royalty

* Baroness Mary Vetsera (1871–1889), Austrian noblewoman; mistress of Rudolf, Crown Prince of Austria
* Lady Mary Butler (1689–1713), Irish-born English baroness; second daughter of the 2nd Duke of Ormonde
* Lady Mary Fitzwilliam (1845–1921), British aristocrat from the Fitzwilliam family
* Lady Mary Fox (1798–1864), British illegitimate daughter of King William IV of the United Kingdom by his mistress Dorothea Jordan
* Lady Mary Lygon (1910–1982), British aristocrat and Russian princess by marriage
* Mary Abercromby, 1st Baroness Abercromby (ca. 1752–1821), Scottish peeress, socialite, and wife of General Ralph Abercromby
* Mary Adelaide, several people
* Mary of Anjou, several people
* Mary Boleyn (c. 1499–1543), English sister of Queen Anne Boleyn
* Mary Brandon, several people
* Mary Bruce (c. 1282–1323), younger sister of Robert the Bruce, King of Scots
* Mary Bruce, Countess of Elgin (1778–1855), Scottish first wife of diplomat Thomas Bruce, 7th Earl of Elgin
* Mary Carew Pole (born 1936), British wife of Sir Richard Carew Pole, 13th Baronet
* Mary Curzon, several people
* Mary of Waltham (1344–1361), daughter of King Edward III of England and Philippa of Hainault; wife of John IV, Duke of Brittany
* Mary of Woodstock (1278–1332), daughter of King Edward I of England
* Mary I, several people
* Mary II, several people
* Mary de Bohun (c. 1369/1370–1394), first wife of Henry Bolingbroke, Earl of Northampton and Hereford; mother of Henry V of England
* Mary de Vere (c. 1554–1624), English noblewoman; daughter of John de Vere and Margery Golding, she married Peregrine Bertie
* Mary Elliot-Murray-Kynynmound, Countess of Minto (1858–1940), British aristocrat, Vicereine of India, and courtier to Queen Mary
* Mary Elphinstone, Lady Elphinstone (1883–1961), British aristocrat; elder sister of Queen Elizabeth The Queen Mother, and maternal aunt and godmother of Queen Elizabeth II
* Mary of Enghien (1367/1370–1446), Italian Countess of Lecce
* Mary Eristavi (1888–1986), Russian aristocrat, fashion icon, and model
* Mary Fiennes, Baroness Dacre (1524–1576), English daughter of George Neville, 5th Baron Bergavenny
* Mary Fleming (1542–fl. 1584), Scottish noblewoman; childhood companion and cousin of Mary, Queen of Scots
* Mary Foley-Berkeley, 17th Baroness Berkeley (1905–1992), British politician and peeress
* Mary Fox, Baroness Holland (1746–1778), British daughter of John FitzPatrick; wife of Stephen Fox, 2nd Baron Holland
* Mary Grey, several people
* Mary of France, several people
* Mary of Great Britain, several people
* Mary of Guise (1515–1560), Queen consort of James V of Scotland and mother of Mary, Queen of Scots
* Mary of Hungary, several people
* Mary of Lancaster (c. 1320/1321–1362), English daughter of Henry, 3rd Earl of Lancaster and Maud Chaworth
* Mary Lilian Henriette Lucie Josephine Ghislaine Baels, birth name of Lilian, Princess of Réthy (1916–2002), second wife of King Leopold III of Belgium
* Mary Knowlton von Francken-Sierstorpff (1870–1929), American socialite who married a German Count
* Princess Mary of England (1605–1607), daughter of James VI and I
* Princess Mary, several people
* Mary, Princess Royal and Princess of Orange (1631–1660), daughter of Charles I of England
* Mary of England, several people
* Mary of Great Britain, several people
* Mary of Baux-Orange (?–1417), French Princess of Orange
* Mary of Scotland, several people
* Mary of Teck, several people
* Mary of York (1467–1482), daughter of King Edward IV of England and Elizabeth Woodville
* Mary Donaldson (born 1972), Queen consort of Frederik X of Denmark
* Mary Polly Paʻaʻāina (c. 1833–1853), Hawaiian chiefess; daughter of Henry Coleman Lewis and Fanny Kekelaokalani
* Mary Thicknesse-Touchet, 22nd Baroness Audley (1858–1942), English baroness
* Mary, Viscount of Béarn (?–after 1187), French ruler
* Queen Mary, several people

### Non-royal aristocrats

* Daisy, Princess of Pless (Mary Theresa Olivia; née Cornwallis-West; 1873–1943), Welsh princess
* Lady Mary Cecil Grey (1907–2002), English daughter of Charles Grey, 5th Earl Grey
* Lady Mary Child-Villiers (1877–1933), British daughter of Victor Child Villiers, 7th Earl of Jersey
* Lady Mary Clive (1907–2010), English writer and historian; daughter of the above
* Lady Mary Coke (1727–1811), English noblewoman
* Lady Mary Gilmour (1896–1984), English daughter of James Hamilton, 3rd Duke of Abercorn
* Lady Mary Grosvenor (1910–2000), British motor racing- and rally driver, businesswoman, and landowner; daughter of Hugh Grosvenor, 2nd Duke of Westminster and Constance Cornwallis-West
* Lady Mary Feilding (1823–1896), English aristocrat
* Lady Mary Maxwell, Scottish wife of Charles Stuart, 4th Earl of Traquair
* Lady Mary Somerset of Worcester, English daughter of nobleman and politician Charles Somerset, 1st Earl of Worcester
* Lady Mary Trefusis (1869–1927), English hymnwriter and courtier
* Mary Arabella Stewart, Countess of Galloway (1850–1903), Scottish wife of Alan Stewart, 10th Earl of Galloway
* Mary Bertie, Duchess of Ancaster and Kesteven (1730–1793), British courtier; second wife of Peregrine Bertie, 3rd Duke of Ancaster and Kesteven
* Mary Blacknall (1616–1650), English wife of Sir Ralph Verney, 1st Baronet, of Middle Claydon
* Mary Bonaparte (1870–1947), French princess
* Mary Bowes, Countess of Strathmore and Kinghorne (1749–1800), English daughter and heiress of Sir George Bowes
* Mary Boyle, Countess of Cork and Orrery (1746–1840), Anglo-Irish literary hostess
* Mary Butler, Duchess of Ormonde (1664–1733), British second wife of James Butler, 2nd Duke of Ormonde
* Mary Campbell, Countess of Argyll (1628–1668), Scottish wife of Archibald Campbell, 9th Earl of Argyll
* Mary Campbell, Countess of Breadalbane and Holland, English noblewoman
* Mary Caroline Blair (1848–1912), British Duchess
* Mary Cavendish, several people
* Mary Cecil, several people
* Mary Constance Wyndham (1862–1937), English society hostess and countess
* Mary, Countess of Blois (1200–1241), daughter of Walter of Avesnes and Margaret of Blois
* Mary, Countess of Falmouth and Dorset (1645–1679), English courtier and mistress of Charles II of England
* Mary, Countess of Harold (1701–1785), English aristocrat and philanthropist
* Mary Cowper (1685–1724), English countess, courtier, and diarist; wife of William Cowper, 1st Earl Cowper
* Mary Cromwell, Countess Fauconberg (1630s–1713), English noblewoman
* Mary Darcy (1565–1644), English baroness; wife of Thomas Darcy, 1st Earl Rivers
* Mary Darcy, Countess of Holderness (c. 1721–1801), English countess; wife of Robert Darcy, 4th Earl of Holderness
* Mary Dawson, Countess of Dartrey (1854–1939), British peer
* Mary de Monthermer (1297–c. 1371), English noblewoman
* Mary Drummond (1675–1729), Scottish countess; daughter of James Drummond, 4th Earl of Perth
* Mary Dudley, several people
* Mary Elliot-Murray-Kynynmound, Countess of Minto (1858–1940), British aristocrat
* Mary Fane, several people
* Mary Fenwick (?–1708), English wife of Sir John Fenwick, 3rd Baronet
* Mary Fiennes (lady-in-waiting) (1495–1531), English courtier; wife of Henry Norris
* Mary Fitton (1578–1647), Elizabethan gentlewoman; maid of honour to Queen Elizabeth
* Mary FitzMaurice, 4th Countess of Orkney (1755–1831), Scottish peer; daughter of Murrough O'Brien, 1st Marquess of Thomond and Mary O'Brien, 3rd Countess of Orkney
* Mary Forbes, Countess of Granard (?–1797), Irish countess; wife of George Forbes, 3rd Earl of Granard
* Mary Fox-Strangways, Countess of Ilchester (1852–1935), Anglo-Irish noblewoman
* Mary Freeman-Grenville, 12th Lady Kinloss (1922–2012), British peer
* Mary Gargrave (1576–c. 1640), English courtier to Anne of Denmark
* Mary Goelet (1878–1937), American-born Scottish duchess, heiress, and socialite
* Mary Hamilton, several people
* Mary Harcourt, Viscountess Harcourt (1874–1961), American-born British aristocrat and philanthropist
* Mary Harmsworth, Viscountess Northcliffe (1867–1963), English wife of publisher Alfred Harmsworth, 1st Viscount Northcliffe
* Mary Hastings (c. 1552–c. 1589), English courtier; daughter of Francis Hastings, 2nd Earl of Huntingdon
* Mary Haughey, Baroness Ballyedmond (born 1947), Northern Irish billionaire heiress and businesswoman
* Mary Herbert, several people
* Mary Hervey (c. 1700–1768), English courtier
* Mary Hill, several people
* Mary Howard, several people
* Mary Hungerford (c. 1468–1530s), English daughter of Thomas Hungerford of Rowden
* Mary Innes-Ker, Duchess of Roxburghe (1915–2014), British aristocrat
* Mary Jane Brabazon, Countess of Meath (1847–1918), British philanthropist; daughter of Amelia, Countess of Lauderdale, and Thomas Maitland, 11th Earl of Lauderdale
* Mary Jenkinson, Countess of Liverpool (1777–1846), British wife of Robert Jenkinson, 2nd Earl of Liverpool
* Mary Jeune, Baroness St Helier (1845–1931), British politician; wife of Francis Jeune, 1st Baron St Helier
* Mary Louisa Bruce, Countess of Elgin (1819–1898), British aristocrat and writer
* Mary Montagu, several people
* Mary Mumford, 15th Lady Herries of Terregles (1940–2017), Scottish peeress
* Mary Nevill, several people
* Mary of Avesnes (1280–1354), French daughter of John II, Count of Holland and Philippa of Luxembourg; brother of William I, Count of Hainaut
* Mary of Bourbon (1515–1538), French daughter of Charles, Duke of Vendôme, and Françoise d'Alençon
* Mary of Guelders (c. 1434–1463), daughter of Arnold, Duke of Guelders
* Mary of Burgundy, several people
* Mary of Lusignan, several people
* Mary of Nassau-Siegen (1418–1472), German countess
* Mary of Nassau-Siegen (1491–1547), German countess
* Mary Osborne, Duchess of Leeds (1723–1764), British daughter of Henrietta Godolphin, née Churchill, 2nd Duchess of Marlborough, and Francis Godolphin, 2nd Earl of Godolphin
* Mary Palmer (born 1750) (1750–1820), Irish marchioness
* Mary Paulet (c. 1540–1592), English noblewoman
* Mary Paulet, Marchioness of Winchester (?–1680), English marchioness; wife of Charles Paulet, 6th Marquess of Winchester
* Mary Pelham, Countess of Chichester (1776–1862), English wife of Thomas Pelham, 2nd Earl of Chichester
* Mary Percy, several people
* Mary Pitt, Countess of Chatham (1762–1821), English noblewoman and political campaigner; wife of John Pitt, 2nd Earl of Chatham
* Mary Ravenscroft (?–1796), Scottish wife of Charles Stewart, 7th Earl of Traquair
* Mary Rich, Countess of Warwick (1625–1678), English countess and writer
* Mary Rosse (1813–1885), Anglo-Irish astronomer, architect, furniture designer, and photographer; wife of William Parsons, 3rd Earl of Rosse
* Mary Sackville (c. 1586–1645), English royal governess
* Mary Sackville, Countess of Dorset (1669–1691), English aristocrat; wife of poet and courtier Charles Sackville, 6th Earl of Dorset
* Mary Scott, 3rd Countess of Buccleuch (1647–1661), Scottish peer
* Mary Scrope (?–1548), English courtier
* Mary Scudamore (c. 1550–1603), English courtier to Elizabeth I
* Mary Seymour, several people
* Mary of Shaftesbury (?–1215/1216), English Roman Catholic abbess; daughter of Count Geoffrey V of Anjou and half-sister of King Henry II of England
* Mary Shirley, Countess Ferrers (1733–1807), English noblewoman
* Mary Sidney, several people
* Mary Somerset, several people
* Mary Stanley, Countess of Derby (1824–1900), English grande dame and political hostess
* Mary Stopford, Countess of Courtown, several people
* Mary Stuart, several people
* Mary Sturt, Baroness Alington (1902–1936), English socialite; daughter of Anthony Ashley-Cooper, 9th Earl of Shaftesbury and Lady Constance Sibell Grosvenor
* Mary Trevelyan (Lady) (1881–1966), English political hostess and voluntary worker
* Mary Villiers, Countess of Buckingham (c. 1570–1632), English countess; mother of George Villiers, 1st Duke of Buckingham
* Mary von Bothmer (1842–1901), English-German writer and aristocrat
* Mary von Rosen (1886–1967), Swedish Lutheran religious worker; wife of Count Eric von Rosen
* Mary von Waldersee (1837–1914), American-born German philanthropist; wife of Prince Frederick of Schleswig-Holstein-Sonderburg-Augustenburg and Count Alfred von Waldersee
* Mary Waldegrave, Countess Waldegrave (1850–1933), British peeress
* Mary Watson-Wentworth, Marchioness of Rockingham (1735–1804), English wife of Charles Watson-Wentworth, 2nd Marquess of Rockingham
* Mary Wood, Viscountess Halifax (1807–1884), English noblewoman
* Mary Woodhouse (?–1656), English daughter of Henry Woodhouse (MP)
* Mary Woodville (c. 1456–1481), English sister of Edward IV's Queen consort, Elizabeth Woodville, and of Anthony Woodville, 2nd Earl Rivers; first wife of William Herbert, 2nd Earl of Pembroke
* Mary Wriothesley, Countess of Southampton (1552–1607), wife of Henry Wriothesley, 2nd Earl of Southampton; mother of Henry Wriothesley, 3rd Earl of Southampton

### Actors

* Mary Ainslee (1914–1991), American actress
* Mary Akrivopoulou (born 1975), Greek actress
* Mary Ansell (actress) (1861–1950), English actress
* Mary Apick (born 1954), Iranian actress
* Mary Aroni (1916–1992), Greek actress
* Mary Astor (1906–1987), American actress
* Mary Badham (born 1952), American actress
* Mary Barclay (1916–2008), English actress
* Mary Begoña (1925–2020), Spanish actress
* Mary Birdsong (born 1968), American actress and comedian
* Mary Boland (1882–1965), American actress
* Mary Bradshaw (d. 1780), English actress
* Mary Brian (1906–2002), American actress
* Mary Bronstein (born 1979), American actress and film director
* Mary Brough (1863–1934), English actress
* Mary Bulkley (1747 or 1748 – 1792), English actress and dancer
* Mary Cadorette (born 1957), American actress
* Mary Carlisle (1914–2018), American actress and dancer
* Mary Carmen Ramírez (born 1932), Spanish actress
* Mary Carr (1874–1973), American actress
* Mary Carrillo (1919–2009), Spanish actress
* Mary Carver (1924–2013), American actress
* Mary Casson (1914–2009), English actress
* Mary Castle (1931–1998), American actress
* Mary Charleson (1890–1961), Irish actress
* Mary Charleston, Australian actress and choreographer
* Mary Cheung (born 1952), Hongkonger beauty pageant winner, image consultant, and actress
* Mary Chieffo (born 1992), American actress
* Mary Chronopoulou (1933–2023), Greek actress
* Mary Collinson (1952–2021), Maltese-British actress and model
* Mary Corbett, 17th-century English actress
* Mary Costa (born 1930), American actress and singer
* Mary Coustas (born 1964), Australian actress and writer
* Mary Crosby (born 1959), American actress
* Mary Dibley (1883–1968), British actress
* Mary Dimino (fl. 2008–2015), American actress and comedian
* Mary Doran (1910–1995), American actress
* Mary Dormal, 1930s and 1940s Argentine actress
* Mary Dresselhuys (1907–2004), Dutch actress
* Mary Elmy (1712–1792), British actress
* Mary Faber (fl. 2005–present), American actress
* Mary Fenton (c. 1854 – c. 1896), Indian actress
* Mary Fickett (1928–2011), American actress
* Mary Field (1909–1996), American actress
* Mary Forbes (1883–1974), British-American actress
* Mary Frann (1943–1998), American actress
* Mary Fuller (1888–1973), American actress
* Mary Galloway (fl. 2011–present), Canadian actress and film writer
* Mary Gannon (1829–1868), American actress
* Mary Germaine (born 1933), English actress
* Mary Gish (1876–1948), American actress
* Mary Gladstane, 19th-century Irish-American actress
* Mary Glynne (1895–1954), Welsh actress
* Mary Gross (born 1953), American actress and comedian
* Mary Harron (actress), American actress
* Mary Hartline (1927–2020), American actress and model
* Mary Hatcher (1929–2018), American actress and soprano
* Mary Heron (actress) (d. 1736), British actress
* Mary Hignett (1916–1980), British actress
* Mary Hon (born 1954), Hongkonger actress
* Mary Jerrold (1877–1955), English actress
* Mary Kent (before 1692 – after 1718), English actress
* Mary Kerridge (1914–1999), English actress
* Mary Kid (1901–1988), German actress
* Mary Knep (d. 1681), English actress
* Mary Kornman (1915–1973), American actress
* Mary Lalopoulou (1926–1989), Greek actress
* Mary LaRoche (1920–1999), American actress and singer
* Mary Lazarus (fl. 2002–present), Nigerian actress
* Mary Loos (1910–2004), American actress and screenwriter
* Mary MacArthur (actress) (1930–1949), American actress
* Mary Mackenzie (1922–1966), English actress
* Mary MacLaren (1900–1985), American actress
* Mary Maguire (1919–1974), Australian actress
* Mary Makhatho (1965–2017), South African actress
* Mary Mara (1960–2022), American actress
* Mary Marlowe (1884–1962), Australian actress and journalist
* Mary Marquet (1895–1979), French actress
* Mary Maude (fl. 1970–1991), British actress
* Mary Maurice (1844–1918), American actress
* Mary Mayberry (1907–1972), American actress
* Mary McAllister (1908–1991), American actress
* Mary McCarty (actress) (1923–1980), American actress, comedian, and singer
* Mary McCormack (born 1969), American actress
* Mary McDonnell (born 1952), American actress
* Mary McEvoy (born 1954), Irish actress
* Mary McIvor (1897–1941), American actress
* Mary Meade (1923–2003), American actress
* Mary Merrall (1890–1973), English actress
* Mary Mersch (1887–1956), American actress
* Mary Millington (1945–1979), English model and actress
* Mary Moder (1905–1993), American actress
* Mary Mouser (born 1996), American actress
* Mary Mozeen (1724 or before – 1773), British singer and actress
* Mary Murillo (1888–1944), English actress
* Mary Neely (born 1991), American actress and director
* Mary Newcomb (1893–1966), American actress
* Mary Newland (1903–1984), English actress
* Mary Nighy (born 1984), English actress
* Mary Njoku (born 1985), Nigerian actress
* Mary Odette (1901–1987), French actress
* Mary Oyaya (fl. 1993–present), Kenyan actress
* Mary Parets (fl. 1937–1943), Argentine actress
* Mary Peach (born 1934), British actress
* Mary Philbin (1902–1993), American actress
* Mary Philips (1901–1975), American actress
* Mary Queeny (1913–2003), Egyptian actress
* Mary Rawson, American actress
* Mary Riggans (1935–2013), Scottish actress
* Mary Rorke (1858–1938), British actress
* Mary Santpere (1913–1992), Spanish actress
* Mary Saunderson (1637–1712), English actress and singer
* Mary Scheer (born 1963), American actress
* Mary Sellers (born 1962), Italian actress
* Mary Servoss (1888–1968), American actress
* Mary Slingsby (d. 1693?), English actress
* Mary Stävin (born 1957), Swedish actress and model
* Mary Steenburgen (born 1953), American actress
* Mary Stein (fl. 1990–present), American actress
* Mary Stockley (fl. 2001–2021), British actress
* Mary Tamm (1950–2012), British actress
* Mary Tarcai (1906–1979), American actress
* Mary Testa (fl. 1979–present), American actress
* Mary Thurman (1895–1925), American actress
* Mary Treen (1907–1989), American actress
* Mary Tsoni (1987–2017), Greek actress and singer
* Mary Twala (1939–2020), South African actress
* Mary Uranta (fl. 2006–present), Nigerian actress
* Mary Ure (1933–1975), British actress
* Mary Vining (1790–1868), English actress
* Mary Walter (1912–1993), Filipino actress
* Mary Waltman (fl. 2006–2008), American actress
* Mary Warner (1804–1854), English actress and theatre manager
* Mary Welch (1922–1958), American actress
* Mary Whitfield (d. 1795), British actress
* Mary Wickes (1910–1995), American actress
* Mary Wimbush (1924–2005), English actress
* Mary Woodvine (born 1967), British actress
* Mary Woronov (born 1943), American actress
* Mary Wynn (1902–2001), American actress

### Politicians

* Mary Abrams (fl. 2019–2021), American politician
* Mary Auld (1893–1984), Scottish politician and women's organizer
* Mary Banotti (1939–2024), Irish politician
* Mary Batchelor (1927–2009), New Zealand trade unionist, feminist, and politician
* Mary Beattie (1923–2015), American politician
* Mary Beck (1908–2005), American politician, female activist, and journalist
* Mary Becker, American former schoolteacher, politician, and mayor
* Mary Begumisa (born 1976), Ugandan politician
* Mary L. Behrens (fl. 1987–1988), American politician
* Mary Bellamy (1861–1955), American teacher, politician, and suffragist
* Mary H. Boergers (born 1946), American politician and educator
* Mary Bono (born 1961), American politician, businesswoman, and lobbyist
* Mary B. Boren (fl. 2019–present), American politician
* Mary Bradfield (fl. 2021–present), American politician and retired teacher
* Mary Bradley (born 1942), American politician
* Mary Brandenburg (born 1949), American politician
* Mary Brennan (born 1954), American politician
* Mary Broadaway (fl. 2013–2017), American politician
* Mary Burrows (1932–2018), American politician
* Mary Caferro (born 1959), American politician
* Mary Callaghan (fl. 2019–present), Irish politician
* Mary Cathcart (born 1942), American politician
* Mary Cheh (born 1950), American politician
* Mary Chen (born 1955), Taiwanese environmentalist and politician
* Mary Chiappe (d. 2017), Gibraltarian writer and politician
* Mary Cirelli (born 1939), American politician
* Mary Clancy (born 1948), Canadian politician
* Mary Z. Connaughton (born 1960), American politician
* Mary A. Conroy (1931–2014), American politician
* Mary Cosgrave (c. 1877 – 1941), Irish social worker and politician
* Mary Geigus Coulter (1859–1946), American lawyer and politician
* Mary Coyle (born 1954), Canadian politician
* Mary Creagh (born 1967), British politician
* Mary Denny (fl. 1993–2007), American politician
* Mary Deros (fl. 1998–present), Canadian politician
* Mary Donohue (born 1947), American retired educator, attorney, politician, and judge
* Mary Dreaver (1887–1961), New Zealand politician
* Mary DuBuisson (fl. 2018–2024), American politician
* Mary Duvall (born 1962), American politician
* Mary Dye (born 1961), American politician
* Mary L. Easley (fl. 1997–2010), American politician
* Mary Easson (born 1955), Australian politician
* Mary B. Edelen (born 1944), American politician
* Mary Eide (1924–2013), Norwegian politician
* Mary Ekstrom (born 1951), American politician
* Mary Fagan (born 1939), English politician
* Mary Fallin (born 1954), American politician
* Mary Fantasia (1919–2020), American politician
* Mary Farquharson (1901–1982), American politician
* Mary Fee (born 1954), Scottish politician
* Mary Felzkowski (born 1963), American businesswoman and politician
* Mary Figg (born 1934), American politician
* Mary Fitzpatrick (born 1969), Irish politician
* Mary Flake de Flores (born 1950), former First Lady of Honduras
* Mary E. Flowers (born 1951), American politician
* Mary L. Fonseca (1915–2005), American politician
* Mary Forsythe (1920–2007), American politician and music teacher
* Mary Fosse (fl. 2022–present), American politician
* Mary Fragedakis (born 1971), Canadian politician
* Mary Franson (born 1977), American politician
* Mary Freehill (born 1946), Irish politician
* Mary Freitas (fl. 2014–present), American politician
* Mary Fritz (1938–2016), American politician
* Mary Gallegos (fl. 2003–2005), American politician
* Mary Gant (born 1936), American politician
* Mary Gaskill (born 1941), American politician
* Mary A. Gillen (1894–1963), American politician
* Mary Gillett (born 1958), Australian politician
* Mary Gilu (fl. 1975–1977), Vanuatuan politician
* Mary Gingell (fl. 1991–1993), American politician
* Mary Glenski (born 1930), American politician
* Mary Glindon (born 1957), English politician
* Mary Gojack (1936–1985), American politician
* Mary González (born 1983), American politician
* Mary B. Goodhue (1921–2004), American lawyer and politician
* Mary Griffin (1926–2022), American politician
* Mary Grigg (1897–1971), New Zealand politician
* Mary R. Grizzle (1921–2006), American politician
* Mary Hagan-Harrell, American politician
* Mary Hales (fl. 2007–2010), American politician
* Mary Hanafin (born 1959), Irish politician
* Mary Harney (born 1953), Irish politician
* Mary Hartley (born 1954), American politician
* Mary Hayashi (born 1967), American politician
* Mary Herrera (born 1959), American politician
* Mary Hoade, Irish politician
* Mary Hodder (born 1945), Canadian politician
* Mary Hodge (born 1946), American politician
* Mary Holt (1924–2021), British politician and judge
* Mary Honeyball (born 1952), British politician
* Mary Hooper, American politician and civic leader
* Mary Hubler (born 1952), American attorney and politician
* Mary Isaacson (born 1970), American politician
* Mary Jackman (1943–2022), Irish politician
* Mary Jeff (1873–1941), Scottish activist and politician
* Mary Kasten (born 1928), American politician
* Mary Keefe (fl. 2013–present), American politician
* Mary Kiffmeyer (born 1946), American politician
* Mary Killiktee (fl. 2021–present), Canadian politician
* Mary Kincaid-Chauncey (fl. 1997–2005), American politician
* Mary Kolar (born 1958), American retired military officer and politician
* Mary E. Kramer (born 1935), American politician
* Mary O. Kryszak (1875–1945), American politician
* Mary Kunesh (born 1960), American politician
* Mary Landrieu (born 1955), American entrepreneur and politician
* Mary Lanigan (fl. 2002–2023), British politician
* Mary Lazich (born 1952), American politician
* Mary A. Lehman (born 1964), American politician
* Mary LeMessurier (1929–2018), Canadian politician
* Mary Lightbody (born 1952), American educator and politician
* Mary Lilly (1859–1930), American politician and social activist
* Mary Littleton (born 1957), American politician
* Mary Lundby (1948–2009), American politician
* Mary C. MacGuire (fl. 1993–1994), American politician
* Mary MacSwiney (1872–1942), Irish activist, politician, and teacher
* Mary Madison (born 1950), American politician
* Mary Madkour (1927–2013), American politician
* Mary Manross (fl. 2000–2009), American politician
* Mary Masanja (born 1975), Tanzanian politician
* Mary Mascher (born 1952), American politician
* Mary Mawai (fl. 2021–present), South Sudanese politician
* Mary C. McAdams (1869–1950), American politician
* Mary McAleese (born 1951), 8th President of Ireland
* Mary McAlister (1896–1976), Scottish politician
* Mary E. McAllister (1937–2020), American politician
* Mary McArdle, Irish politician
* Mary McCarty (born 1954), American politician
* Mary McClure (1939–2016), American politician
* Mary McGowan (1885–1980), American politician
* Mary McNally (born 1955), American politician and educator
* Mary McNeil (fl. 2009–2013), Canadian politician
* Mary McSorley (fl. 1981–1993), Irish politician
* Mary Mdziniso (1924–2000), Swazi politician
* Mary K. Meany (1897–2000), American politician and educator
* Mary Mead (1935–1996), American politician
* Mary Meillon (1919–1980), Australian politician
* Mary Mercer (1883–1945), British politician
* Mary Messier (born 1952), American politician
* Mary Metcalfe (born 1954), South African politician
* Mary Miller (politician) (born 1959), American politician
* Mary V. Mochary (born 1942), American politician and lawyer
* Mary Mooney (born 1958), Irish politician
* Mary Morales (fl. 2015–present), Venezuelan politician
* Mary Moriarty (born 1964), American politician
* Mary Mosiman (born 1962), American politician
* Mary Mugyenyi (born 1957), Ugandan politician
* Mary Mulhern (born 1959), American politician
* Mary Mulligan (born 1960), Scottish politician
* Mary Munive (born 1981), Second Vice President of Costa Rica
* Mary Musa (d. 2015), Sierra Leonean politician
* Mary Mushinsky (born 1951), American politician
* Mary Nagu (born 1952), Tanzanian politician
* Mary Naidu (fl. 1964–1970), Indian politician
* Mary Nelis (born 1935), Irish politician
* Mary Neuhauser (born 1934), American politician
* Mary Ng (born 1969), Canadian politician
* Mary L. Nock (1903–1987), American politician
* Mary Norwood (born 1952), American politician
* Mary E. Odde (1918–1990), American politician
* Mary H. Odom (1921–2014), American educator and politician
* Mary Ogg (1944 or 1945 – 2022), New Zealand politician
* Mary Karooro Okurut (born 1954), Ugandan educator, author, and politician
* Mary Olson (born 1958), American politician
* Mary O'Rourke (1937–2024), Irish politician
* Mary L. Padula (fl. 1983–1996), American former politician
* Mary Panzer (born 1951), American politician
* Mary Peltola (born 1973), American politician and former tribal judge
* Mary Peterson (1885–1973), American politician
* Mary Pickens (fl. 1995–2003), American politician
* Mary Pinkett (1926–2003), American politician
* Mary Polak (born 1967 or 1968), Canadian politician
* Mary Poling (born 1946), American politician
* Mary Previte (1932–2019), American politician
* Mary Pruitt (1934–2020), American politician
* Mary Putland (1783–1864), Australian politician
* Mary Quirk (1880–1952), Australian politician
* Mary Risteau (1890–1978), American politician
* Mary Robichaux (born 1955), American politician
* Mary Rogeness (born 1941), American politician
* Mary Salas (born 1948), American politician
* Mary Salisbury (1917–2008), English politician
* Mary Sawatzky (born 1961), American politician
* Mary Schneider (politician) (fl. 2014–present), American politician
* Mary Schryer (fl. 2006–2010), Canadian politician
* Mary K. Schwope (fl. 1974–1991), American politician
* Mary Seery Kearney (fl. 2019–present), Irish politician
* Mary Shadow (1925–1992), American politician
* Mary K. Shell (1927–2018), American politician
* Mary Shields (fl. 1999–2015), Irish politician
* Mary Shortall (born 1958), Canadian politician
* Mary Singleton (1926–1980), American politician and teacher
* Mary Skinner (1945–2009), American politician
* Mary E. Small (born 1954), American politician
* Mary Soderberg (fl. 2008–2015), American politician
* Mary Souza (fl. 2014–2022), American politician
* Mary Sykes (1896–1981), British politician and lawyer
* Mary Throne (born c. 1960), American politician
* Mary Thurston (fl. 2016–2022), New Zealander politician
* Mary Turok, South African politician and activist
* Mary Upton (born 1946), Irish politician
* Mary Valentine (born 1946), American politician
* Mary Vanderlinde (1929–2005), American politician
* Mary Varallo (1897–1979), American politician
* Mary Verner (born 1956), American politician
* Mary Wallace (born 1959), Irish politician
* Mary Welander (fl. 2021–present), American politician
* Mary Whiteford (born 1964), American politician
* Mary Willey (1941–2022), Australian politician
* Mary Wolfe (born 1963), American politician
* Mary Wooldridge (born 1967), Australian politician
* Mary Yap (born 1951), Malaysian politician
* Mary Zoghby (born 1933), American politician
* Mary Zone (1919–2005), American politician

### Spouses

* Mary Brickell, American wife of William Brickell
* Mary Bushiri, Malawian wife of Shepherd Bushiri
* Mary Cowen, Irish wife of Brian Cowen
* Mary Drelincourt (c. 1678 – 1755), Welsh benefactor and wife of Peter Drelincourt
* Mary Fenech Adami (1933–2011), Maltese wife of Eddie Fenech Adami
* Mary Groves (d. 1870), English wife of George Müller
* Mary Guillermin, American family therapist and artist and wife of John Guillermin
* Mary Haydon, English wife of George Silver
* Mary Lum (1758–1815), American wife of Stephen Girard
* Mary Mandeville, Irish wife of John Mandeville
* Mary Marquardt, American wife of Harrison Ford from 1964 to 1979
* Mary Max (1966–2019), American animal rights activist and wife of Peter Max
* Mary McGlinchey, Irish wife of Dominic McGlinchey
* Mary Meachum (c. 1805 – 1869), American wife of John Berry Meachum
* Mary Moutray (c. 1752 – 1844), American wife of John Moutray
* Mary Oldfield (1793–1875), American and 47th wife of Brigham Young
* Mary Ormond (c. 1702 – c. 1759), American wife of Blackbeard
* Mary Pardoe (1768–1844), Australian convict and wife of Peter Hibbs
* Mary Pennyman (1630–1701), English religious polemicist and wife of John Pennyman
* Mary Perdue, American wife of Sonny Perdue
* Mary Pingo, English wife of Thomas Pingo
* Mary Pordage, English wife of Samuel Pordage
* Mary Plummer (1849–1922), American-born pupil and wife of Georges Clemenceau
* Mary Rockefeller (1907–1999), American wife of Nelson A. Rockefeller from 1930 to 1962
* Mary Scheier (1908–2007), American ceramic artist and wife of Edwin Scheier
* Mary Schoonmaker (d. 1917), American and first wife of Alton B. Parker
* Mary Sellwood, English journalist and wife of Arthur V. Sellwood
* Mary Stead, American wife of Charles Cotesworth Pinckney
* Mary Steele (1678–1718), Welsh landowner and wife of Sir Richard Steele
* Mary Tarrero-Serrano (1924–2010), Cuban politician and second wife of Carlos Prío Socarrás
* Mary Van Cott (1844–1884), American and 52nd wife of Brigham Young
* Mary Weld, English wife of Thomas Allen

### Other people

* Mary (slave) (c. 1824–1838), American teenage slave executed for murder
* Mary A. Ahrens (1836–1921), English-American teacher, lawyer, and social reformer
* Mary A. Aston (c. 1836–1913), American army nurse during the American Civil War
* Mary A. Blood (1851–1927), American teacher of elocution and expression
* Mary A. Bomar (1944–2022), English-born American national park service director
* Mary A. Brigham (1829–1889), American educator
* Mary A. Brinkman (1846–1932), American homeopathic physician
* Mary A. Conlon (1870–1936), American elementary school principal
* Mary A. Cornelius (1829–1918), American author and social reformer
* Mary A. G. Dight (1860–1923), American physician
* Mary A. Hickey (1874–1954), American nurse and health administrator
* Mary A. Kingsbury (1865–1958), American school library pioneer
* Mary A. Legere, American retired army general
* Mary A. McCurdy (1852–1934), African-American temperance advocate and suffragist
* Mary A. Reardon (1912–2002), American liturgical artist and illustrator of children's books
* Mary Abel (c. 1850–1938), American food writer
* Mary Abichi (born 1990), British track and field sprinter
* Mary Abney (1676–1750), English landowner
* Mary Abukutsa-Onyango (born 1959), Kenyan humanitarian and agricultural scientist
* Mary Adair (born 1936), American Cherokee Nation educator and painter
* Mary Adshead (1904–1995), English painter, muralist, illustrator, and designer
* Mary Aggie, 18th-century African-American slave who participated in a trial that resulted in Virginia allowing slaves to claim benefit of clergy
* Mary Agria (born 1941), American writer
* Mary Aikenhead (1787–1858), Irish Roman Catholic nun and health professional
* Mary Ainsworth (1913–1999), American-Canadian developmental psychologist
* Mary Ajami (1888–1965), Syrian poet and pioneering feminist writer in Arabic
* Mary Akinyemi (born 1954), Nigerian former sprinter
* Mary Akor (born 1976), Nigerian-American athlete
* Mary Akrami (born 1975/1976), Afghan women's rights activist
* Mary Al-Atrash (born 1994), Palestinian swimmer
* Mary Albert (born 1952), American earth scientist and professor of engineering
* Mary Albertson (1838–1914), American botanist and astronomer
* Mary Alcock (c. 1742–1798), English poet, essayist, and philanthropist
* Mary Alcorn (1866–1928), New Zealand interior designer and business owner
* Mary Alessi, American Christian songwriter and worship leader
* Mary Alfonsi, real name of Donna Christanello (1942–2011), American professional wrestler
* Mary Alger (1838–1894), British headmistress
* Mary Aline Wilshin, birth name of Sunday Wilshin (1905–1991), British actress and radio producer
* Mary Allerton (c. 1616–1699), Dutch settler of Plymouth Colony
* Mary Allies (1852–1927), English Roman Catholic historian, writer, and translator
* Mary Allis (1899–1987), American dealer of art and antiques
* Mary Allitt (1925–2013), Australian cricketer
* Mary Alment (1834–1908), Irish landscape- and portrait artist
* Mary Almond (1928–2015), English physicist, radio astronomer, palaeomagnetist, mathematician, and computer scientist
* Mary Almy (1883–1967), American architect
* Mary Aloe, American film- and television producer
* Mary Alwyn, alternate name of Doreen Carwithen (1922–2003), English composer of classical- and film music
* Mary Ama, Cook Islands-New Zealand artist and community arts organiser
* Mary Ambler (1805–1868), American humanitarian and fuller
* Mary Ambree (fl. 1584), English army soldier
* Mary Amdur (1921–1998), American toxicologist and public health researcher
* Mary Amiti, Australian economist
* Mary Amons, American cast member on The Real Housewives of D.C.
* Mary Amponsah (born 2006), Ghanaian professional footballer
* Mary Andersson (1929–2020), Swedish author and playwright
* Mary Andross (1893–1968), Scottish chemist
* Mary Anning (1799–1847), English fossil collector, dealer, and palaeontologist
* Mary Ansell (?–1899), English woman executed for murder
* Mary Anselmo, American billionaire businesswoman
* Mary Anthony (1916–2014), American choreographer, modern dancer, and dance teacher
* Mary Antin (1881–1949), American author and immigration rights activist
* Mary Appelhof (1936–2005), American biologist, vermicomposter, and environmentalist
* Mary Applebey (1916–2012), English civil servant and mental health campaigner
* Mary Archer (born 1944), English scientist, educator, and businesswoman
* Mary Armanios, American oncologist and professor
* Mary Armine (?–1676), English gentlewoman and benefactor
* Mary Arrigan (born 1943), Irish illustrator, artist, and novelist
* Mary Ashley (1931–1996), American video- and performance artist and painter
* Mary Ashun (born 1968), Ghanaian-Canadian educator, author, and researcher
* Mary Astell (1666–1731), English protofeminist writer, philosopher, and rhetorician
* Mary Audsley (1919–2008), English painter and sculptor
* Mary Ayubi, Afghan filmmaker and journalist
* Mary Azarian (born 1940), American woodcut artist and children's book illustrator
* Mary Azcuenaga (born 1945), American attorney
* Mary Azrael (born 1943), American author and poet
* Mary B. Malveaux (born 1967), American lawyer and judge
* Mary B. McCord, American lawyer, national security analyst, and former government official
* Mary B. Moser (1924–2013), American field linguist and Bible translator
* Mary B. Schuenemann (1898–1992), American painter
* Mary B. Warlick (born 1957), Australian-born American diplomat
* Mary B. Weaver (1887–1978), American farmer and state legislator
* Mary Bacon (1948–1991), American Thoroughbred jockey and model
* Mary Baguley (?–1675), English woman who was executed for witchcraft
* Mary Baines (1932–2020), British palliative care physician
* Mary Ballou (1809–1894), American memoirist
* Mary Balogh (born 1944), Welsh-Canadian novelist
* Mary Bamber (1874–1938), Scottish socialist, trade unionist, social worker, and suffragist
* Mary Bancroft (1903–1997), American novelist and spy
* Mary Bankes (c. 1598–1661), English cavalier
* Mary Bannister, sister of S Bannister (1787–?), British equestrian performer and tightrope walker
* Mary Barbour (1875–1958), Scottish political activist, local councillor, bailie, and magistrate
* Mary Bard (1904–1970), American writer
* Mary Barkas (1889–1959), New Zealand psychiatrist, physician, and author
* Mary Barksdale (1920–1992), African-American nurse, businesswoman, and civil rights activist
* Mary Barkworth (born 1941), English-born American botanist and professor emerita
* Mary Barnard (1909–2001), American poet, biographer, and translator
* Mary Barra (born 1961), American businesswoman
* Mary Barratt Due (1888–1969), Norwegian pianist
* Mary Bartelme (1866–1954), American judge and lawyer
* Mary Bass (1905–1996), American journalist, writer, and executive editor
* Mary Bastholm, English murder victim
* Mary Bastian (1948–1985), Sri Lankan Tamil human rights activist and Roman Catholic priest
* Mary Batcher, American statistician
* Mary Bateman (1768–1809), English alleged witch who was executed for murder
* Mary Bateson (historian) (1865–1906), English historian and suffrage activist
* Mary Batten (born 1937), American science writer
* Mary Battersby (fl. 1801–1841), Irish artist and naturalist
* Mary Bauermeister (1934–2023), German artist
* Mary Baughman (1874–1956), American physician, medical school professor, and clubwoman
* Mary Baumgartner (1930–2018), American AAGPBL player
* Mary Bayley (1816–1899), British temperance activist and pamphlet writer
* Mary Bayliss (1940–2019), English magistrate
* Mary Baynton (c. 1515–?), English impostor
* Mary Beal (1878–1964), American botanist
* Mary Beale (1633–1699), English portrait painter
* Mary Beams (born 1945), American artist and animator
* Mary Beasley (born 1937), Australian retired public servant and business executive
* Mary Beaton (c. 1543–1597), Scottish courtier and poet
* Mary Beaudry (1950–2020), American archaeologist, educator, and author
* Mary Beckerle, American cell biologist
* Mary Beckett (1926–2013), Irish author
* Mary Beckinsale (?–2019), English art historian
* Mary Beckman (born 1953), American professor emerita of linguistics
* Mary Bedford (1907–1997), South African freestyle swimmer
* Mary Beever (1802–1883), British artist and botanist
* Mary Behrend, 19th-century American philanthropist
* Mary Beilby (c. 1750–1797), English enameller and glass-painter
* Mary Beisiegel, Canadian-born American associate professor of mathematics
* Mary Benton (1855–1944), English headteacher
* Mary Benwell (1739–?), English artist, miniaturist, and pastellist
* Mary Berenson (1864–1945), American art historian
* Mary Berg (1924–2013), Polish Holocaust survivor and diarist
* Mary Berg (chef) (born 1989), Canadian television host, author, and cook
* Mary Bergin (born 1949), Irish folk musician
* Mary Berkeley (born 1965), English retired long jumper
* Mary Berkheiser, American lawyer and professor of law
* Mary Berko (born 1988), Ghanaian footballer
* Mary Bernheim (1902–1997), English biochemist
* Mary Bettans (c. 1788–1859), English dressmaker
* Mary Beyt (born 1959), American artist
* Mary Biddinger (born 1974), American poet, editor, and academic
* Mary Bidwell (1881–1996), American supercentenarian
* Mary Bierbaum (born 1955), American writer
* Mary Birdsall (1828–1894), American suffragette, temperance worker, and journalist
* Mary Birshtein (1902–1992), Soviet social scientist
* Mary Bishai (born 1970), American physicist
* Mary Blade (1913–1994), American engineer, camp director, and professor
* Mary Blandy (c. 1720–1752), English murderer
* Mary Blathwayt (1879–1961), English feminist, suffragette, and social reformer
* Mary Blewett (born 1938), American author and academic
* Mary Blue, American neurobiologist, computational neurologist, and associate professor
* Mary Bluett (born 1951), Australian trade unionist and teacher
* Mary Blume, American historian and biographer
* Mary Bly (born 1962), American writer and professor
* Mary Boakye (born 2000), Ghanaian track and field athlete
* Mary Bock, American journalist and professor of journalism
* Mary Boggs (1920–2002), American muralist and textbook author
* Mary Boies (born 1950), American attorney
* Mary Bolton (addiction counsellor) (1920–1996), Irish counsellor and (non-clinical) psychotherapist
* Mary Bonauto (born 1961), American lawyer and civil rights advocate
* Mary Bonner (1887–1935), American printmaker
* Mary Bonney (1816–1900), American educator and advocate for Native American rights
* Mary Bonnin, American underwater diver and former U.S. Navy sailor
* Mary Bookstaver (1875–1950), American feminist, political activist, and editor
* Mary Everest Boole (1832–1916), English mathematician
* Mary Boone (born 1951/1952), American art dealer and collector
* Mary Booze (1878–1955), American political organizer and activist
* Mary Boquitas (born 1969), Mexican singer and actress
* Mary Borden (1886–1968), American-British novelist and poet
* Mary Borgstrom (1916–2019), Canadian potter, ceramist, and artist
* Mary Borkowski (1916–2008), American fiber artist
* Mary Bothwell (1900–?), Canadian classical vocalist and painter
* Mary Botsford (1865–1939), American anesthesiologist
* Mary Boulding (1929–2009), English Roman Catholic nun, theologian, writer, and translator
* Mary Bourke-Dowling (1882–1944), Irish suffragette and republican
* Mary Bousted (born 1959), British trade unionist
* Mary Bouxsein, American biomechanical engineer and orthopedic researcher
* Mary Bowerman (1908–2005), American botanist
* Mary Bowermaster (1917–2011), American masters athlete
* Mary Bowman (1908–2002), American economist
* Mary Bownes (born 1948), English molecular- and developmental biologist, and emerita professor
* Mary Bowser, 19th-century American Union spy during the American Civil War
* Mary Box (?–1679), English school founder
* Mary Boyoi (born 1974), South Sudanese singer and author
* Mary Bradburn (1918–2000), British mathematics educator
* Mary Bradbury (1615–1700), English-born American convicted witch, but not executed
* Mary Brady (1821–1864), American nurse in the American Civil War
* Mary Brannagan, Irish chess player
* Mary Brant (c. 1736–1796), Canadian Mohawk leader
* Mary Brave Bird (1954–2013), Sicangu Lakota writer and activist
* Mary Brazier (1904–1995), English-born American neuroscientist
* Mary Brebner (1858–1933), Scottish teacher and classical scholar
* Mary Breen (1933–1977), Australian athlete
* Mary Brewster (c. 1569–1627), English-born American Pilgrim, and a Mayflower passenger
* Mary Bright (1954–2002), Scottish curtain designer
* Mary Brinton, American sociologist
* Mary Bristow (?–1805), British landscape architect and embroiderer
* Mary Broad (1860–1942), British entrepreneur and Bournemouth headmistress
* Mary Broadhurst (1860–1928), English agricultural reformer and radical
* Mary Brockert, real name of Teena Marie (1956–2010), American singer, songwriter, and producer
* Mary Brodrick (1858–1933), English archaeologist and Egyptologist
* Mary Broh (born 1951), Liberian former mayor
* Mary Brook (c. 1726–1782), British Quaker, preacher, and writer
* Mary Brooksbank (1897–1978), Scottish mill worker, socialist, trade unionist, and songwriter
* Mary Brosnan (1906–1988), American businesswoman and mannequin designer
* Mary Brück (1925–2008), Irish astronomer, astrophysicist, and historian of science
* Mary Brunner (born 1943), American criminal
* Mary Brunton (1778–1818), Scottish novelist
* Mary Brush, 19th-century American inventor, engineer, and businesswoman
* Mary Brydon, English nurse
* Mary Bubb (1920–1988), American journalist
* Mary Bucholtz (born 1966), American professor of linguistics
* Mary Buckland (1797–1857), English palaeontologist, marine biologist, and scientific illustrator
* Mary Buff (1890–1970), American creator of illustrated children's books
* Mary Buick (1777–1854), Scottish nurse
* Mary Bumby (1811–1862), English-born New Zealand missionary and beekeeper
* Mary Bunting (1910–1998), American bacterial geneticist and college president
* Mary Burchell (1904–1986), English campaigner for Jewish refugees, and romance novelist
* Mary Burger (born 1948), American professional rodeo cowgirl and barrel racer
* Mary Burkett (1924–2014), English art curator and non-fiction writer
* Mary Burrell (1865–?), American educator and businesswoman
* Mary Burzminski (born 1960), Canadian middle-distance runner
* Mary Butcher (1927–2018), American AAGPBL pitcher
* Mary Butters (c. 1770–c. 1850), Irish witch
* Mary Butterworth (1686–1775), American counterfeiter
* Mary Butts (1890–1937), English modernist writer
* Mary Byfield (1795–1871), English book illustrator and wood engraver
* Mary Byker, English singer, record producer, and DJ
* Mary C. Baltz (1923–2011), American soil scientist
* Mary C. Boys (born 1947), American scholar of religious studies
* Mary C. Juhas (born 1955), American engineer
* Mary C. Lobban (1922–1982), British-born Canadian physiologist
* Mary C. MacNiven (1905–1997), Gaelic singer
* Mary C. Noble (born 1949), American former Supreme Court judge
* Mary C. Pangborn (1907–2003), American scientist and writer of science fiction
* Mary C. Pearl (born 1950), American environmental scientist and former dean
* Mary C. Pendleton (born 1940), American retired diplomat
* Mary C. Seward (1839–1919), American poet, composer, parliamentarian, and philanthropist
* Mary C. Tanner (born 1951), American venture capitalist and investment banker
* Mary C. Whitman (1809–1875), American educator
* Mary Cadogan (1928–2014), English author
* Mary Caesar (c. 1677–1741), English writer and Jacobite activist
* Mary Cagle (born 1989), American webcomic artist
* Mary Cagnin (born 1990), Brazilian comic artist
* Mary Calcaño (1906–1992), Venezuelan aviator
* Mary Calderone (1904–1998), American physician, author, public speaker, and public health advocate for reproductive rights and sex education
* Mary Callahan Erdoes (born 1967), American investment manager and businesswoman
* Mary Callery (1903–1977), American artist
* Mary Calvi, American television journalist and author
* Mary Campion (1687–1706), English singer and dancer
* Mary Canberg (1918–2004), American violinist, conductor, and music educator
* Mary Cannell (1913–2000), English educator and historian of mathematical physics
* Mary Cannon, Irish psychiatrist, research scientist, public figure, and anti-cannabis advocate
* Mary Cantwell (1930–2000), American journalist and novelist
* Mary Carbery (1867–1949), English author
* Mary Card (1861–1940), Australian designer and educator
* Mary Carewe, English singer and vocal coach
* Mary Carillo (born 1957), American sportscaster and former professional tennis player
* Mary Carleton (1642–1673), English socialite and fraudster who was executed
* Mary Carlin (1873–1939), British trade unionist
* Mary Carnell (1861–1925), American photographer and clubwoman
* Mary Carrington, American immunologist
* Mary Carruthers (born 1941), American professor emeritus of English
* Mary Carryl (?–1809), Irish servant and companion of the Ladies of Llangollen
* Mary Carskadon, American professor of psychiatry and human behavior, and researcher of sleep
* Mary Cartwright (1900–1998), British mathematician
* Mary Carty, American musician, songwriter, and music arranger
* Mary Cassatt (1844–1926), American painter and printmaker
* Mary Cassidy, Irish singer
* Mary Castillo (born 1974), American author
* Mary Catlyn, English mother of nobleman Robert Spencer, 1st Baron Spencer of Wormleighton
* Mary Catterall (1922–2015), English medical doctor and sculptor
* Mary Cawse (1808–1850), British opera singer
* Mary Cecil, 2nd Baroness Amherst of Hackney (1857–1919), English hereditary peer, charity worker, archaeologist, and ornithologist
* Mary Chadwick (?–1943), English nurse and psychoanalyst
* Mary Challis, pen name of Sara Woods (1922–1985), English mystery writer
* Mary Chamberlain (born 1947), English novelist and historian
* Mary Chamot (1899–1993), Russian-born English art historian and museum curator
* Mary Champion de Crespigny (c. 1749–1812), English novelist and letter writer
* Mary Chandler (1687–1745), English poet
* Mary Channing (1687–1706), English woman who was executed for murder
* Mary Chapman, British businesswoman
* Mary Cuningham Chater (1896–1990), English composer, author, music advisor, and editor
* Mary Chavelita Dunne Bright, real name of George Egerton (1859–1945), Australian-born Irish writer of short stories, novels, plays, and translations
* Mary Chawner, 19th-century English silversmith
* Mary Chayko (born 1960), American sociologist and professor of communication and information
* Mary Cheke (c. 1532–1616), English courtier, poet, and epigrammatist
* Mary Chemweno (born 1959), Kenyan former middle-distance runner
* Mary Cheney (born 1969), American daughter of retired politician and businessman Dick Cheney
* Mary Chess (1878–1964), American perfumer
* Mary Chiarella (born 1952), Australian academic, nurse, author, and professor emerita
* Mary Chichester (1801–1876), English Catholic diarist
* Mary Chilton (1607–1679), English Pilgrim
* Mary Chind-Willie (born 1967), American photographer
* Mary Chinery-Hesse (born 1938), Ghanaian civil servant and diplomat
* Mary Chipperfield (1937–2014), British circus entertainer
* Mary Cholhok (born 1997), South Sudanese-born Ugandan professional netball player
* Mary Christianna Milne, birth name of Christianna Brand (1907–1988), British crime writer and children's author
* Mary Christine Brockert, real name of Teena Marie (1956–2010), American soul- and R&B singer, songwriter, and producer
* Mary Christy (born 1952), Luxembourgish singer
* Mary Chubb (1903–2003), British writer and archaeologist
* Mary Chudleigh (1656–1710), English poet
* Mary Chulkhurst (1100–1134), English conjoined twin
* Mary Chun, American conductor
* Mary Churchill (puppeteer) (1930–1997), American puppeteer, educator, and entrepreneur
* Mary Clem (1905–1979), American mathematician and human computer
* Mary Clement (1863–1944), Luxembourgish-born American serial killer
* Mary Clifford, 18th-century English murder victim
* Mary Clinton (born 1960), New Zealand former field hockey player
* Mary Clive (1907–2010), British writer and historian
* Mary Clouston Dive, real name of Mollie Dive (1913–1997), Australian scientist and cricketer
* Mary Cloyd Burnley Stifler (1876–1956), American botanist
* Mary Clutter (1930–2019), American plant biologist
* Mary Clyde (born 1953), American short story writer
* Mary Coate (1886–1972), English historian
* Mary Dora Coghill (c. 1869–1957), American teacher, vice principal, principal, and civic leader
* Mary Cohan (1909–1983), American composer and lyricist
* Mary Coleridge (1861–1907), English novelist and poet
* Mary Collier (1688–1762), English poet
* Mary Collin (1860–1955), English teacher and campaigner for women's suffrage
* Mary Colling (1804–1853), British poet and domestic servant
* Mary Collson (1870–1952), American feminist activist and Christian scientist
* Mary Collyer (c. 1716–1763), English translator and novelist
* Mary Colquhoun (1836–1920), Scottish writer
* Mary Colter (1869–1958), American architect and designer
* Mary Colton (1822–1898), Australian philanthropist and suffragist
* Mary Colum (1884–1957), Irish-born American literary critic and author
* Mary Colvin (1907–1988), English WRAC director and equestrian
* Mary Colwell, English environmentalist author and producer
* Mary Conley, American contestant on The Amazing Race (American TV series)
* Mary Conn, nickname of Michelle Conn (born 1963), Canadian former field hockey player
* Mary Connealy (born 1956), American author of Christian fiction
* Mary Connery, Irish former camogie player
* Mary Coombs (1929–2022), British computer programmer and schoolteacher
* Mary Corkling (1850–1938), English painter and food reformer
* Mary Corner (1899–1962), British pharmacist, cotton worker, and chemist
* Mary Cornwall Legh (1857–1941), English Anglican missionary
* Mary Corse (born 1945), American artist
* Mary Cortani, American Army veteran and dog trainer
* Mary Corylé (1894–1976), Ecuadorian writer and poet
* Mary Cosby, American cast member on The Real Housewives of Salt Lake City
* Mary Cosh (1919–2019), English freelance journalist, historian, and Royal Navy personnel during World War II
* Mary Coulcher (1852–1925), British philanthropist and hospital head
* Mary Coulshed (1904–1998), British Army officer
* Mary Cowan (1863–1898), American serial killer
* Mary Cramer (1893–1984), Australian charity- and community worker
* Mary Crawler (c. 1854–1935), Hunkpapa Sioux woman who fought during the Battle of Little Big Horn
* Mary Cresswell (born 1937), American-born New Zealand poet
* Mary Crichton, Viscountess Crichton (1883–1959), English daughter of Hugh Grosvenor, 1st Duke of Westminster
* Mary Critchett (?–1729), English pirate and convict
* Mary Croarken, British independent scholar and author
* Mary Crocker, American murder victim
* Mary Cronk (1934–2018), Scottish independent midwife
* Mary Crooke (fl. 1657–1692), Irish printer and bookseller
* Mary Crooks (born 1950), Australian feminist and public policy specialist
* Mary Cross (born 1934), American professor, editor, writer, and biographer
* Mary Croughan, American epidemiologist and academic administrator
* Mary Crow, American poet, translator, and professor
* Mary Crudelius (1839–1877), British campaigner for women's education and women's suffrage
* Mary Cruger (1834–1908), American novelist
* Mary Crumpe (?–1861), Irish novelist
* Mary Cuddie (1823–1889), Scottish-born New Zealand farmwife, midwife, and shopkeeper
* Mary Cullen (born 1982), Irish long-distance runner
* Mary Cullinan (1950–2021), American academic administrator
* Mary Cummings (1839–1927), American academic and philanthropist
* Mary Cushman, American vascular hematologist and professor of medicine and pathology
* Mary Custy, Irish musician
* Mary Cutts (1814–1856), American socialite, historian, and memoirist
* Mary Cybulski, American script supervisor and film director
* Mary Czerwinski, American cognitive scientist and computer-human interaction expert
* Mary D. Cullen (born 1929), Irish college tutor and women's movement activist
* Mary D. Diehl (fl. early 1900s), American police officer
* Mary D. Lowman (1842–1912), American schoolteacher and mayor
* Mary D. Powers (1922–2016), American civil rights activist
* Mary D. Sammel, American biostatistician and professor
* Mary Daheim (1937–2022), American writer of romance- and mystery novels
* Mary Dailey (1928–1965), American AAGPBL pitcher
* Mary Dallas (1952–2023), Scottish-born Australian archaeologist
* Mary Dalrymple (born 1954), British linguist and professor
* Mary Dalton (born 1950), Canadian poet and educator
* Mary Daniel, American general district court judge
* Mary Dann (1923–2005), Western Shoshone Native American spiritual leader, rancher, and cultural-, spiritual-, and land rights activist
* Mary Darly, 18th-century English printseller and caricaturist
* Mary Dasso, American biochemist
* Mary Davenport Engberg (1880–1951), American violinist, composer, and conductor
* Mary Davys (1674?–1732), Irish novelist and playwright
* Mary Dawa, South Sudanese footballer
* Mary de Bode (1700s–1812), French baroness
* Mary de Bunsen (1910–1982), Spanish-born British ATA pilot and author
* Mary de Cervellione (1230–1290), Spanish Roman Catholic saint
* Mary de Garmo Buel, American mother of U.S. Army officer Eugene Fechet
* Mary de Lellis Gough (1892–1983), Irish-born American nun and mathematician
* Mary de Lourdes Gogan (1908–2000), Irish nun and missionary nurse in Nigeria
* Mary de Piro (born 1946), Maltese artist
* Mary de Rachewiltz (born 1925), Italian-American poet and translator
* Mary de Sousa (1890–1953), Indian-Kenyan doctor
* Mary De Garis (1881–1963), Australian medical doctor
* Mary De la Beche Nicholl (1839–1922), Welsh lepidopterist and mountaineer
* Mary De Vera, Canadian pharmacoepidemiologist, health services researcher, and academic
* Mary Dearborn, American biographer and author
* Mary DeChambres, American film- and television editor
* Mary Decker (born 1958), American retired middle-distance runner
* Mary Deconge (born 1933), American mathematician and former nun
* Mary DeDecker (1909–2000), American botanist, conservationist, and environmentalist
* Mary DeGenaro (born 1961), American lawyer and former Supreme Court justice
* Mary DeMarle, video game writer
* Mary DeMelim (1930–2012), American academic administrator
* Mary Dempster (born 1955), Canadian volleyball player
* Mary Dendy (1855–1933), Welsh educational theorist, eugenicist, writer, and mental health activist
* Mary Denness (1937–2017), English ship's steward, school nurse, and matron
* Mary Dennett (1872–1947), American women's rights activist, pacifist, homeopathic advocate, and pioneer
* Mary Dennett (prior) (1730–1781), English Roman Catholic nun
* Mary DePiero (born 1968), Canadian diver
* Mary Dering (1629–1704), English composer
* Mary DeRosa, American lawyer and professor of law
* Mary Desha (1850–1911), American educator and activist
* Mary Detournay, Belgian international table tennis player
* Mary Devens (1857–1920), American photographer
* Mary Deverell (1731–1805), English moral- and religious essayist
* Mary Dewson (1874–1962), American feminist and political activist
* Mary Deyo (1858–1932), American teacher and Christian missionary
* Mary Dhalapany (born 1953), Indigenous Australian contemporary artist
* Mary Dicas (fl. 1800–1818), English businesswoman and scientific instrument maker
* Mary Dick (1791–1883), British philanthropist
* Mary Dickens (1838–1896), English daughter of novelist Charles Dickens
* Mary Dickenson-Auner (1880–1965), Irish violinist, composer, and music teacher
* Mary Dignam (1857–1938), Canadian painter, teacher, and art organizer
* Mary Dillwyn (1816–1906), Welsh photographer
* Mary di Michele (born 1949), Italian-Canadian poet and author
* Mary Dimke (born 1977), American lawyer and district judge
* Mary Dinah, Nigerian hotelier, social entrepreneur, humanitarian, and human rights activist
* Mary Dingman (1875–1961), American social- and peace activist
* Mary Doakes (1936–2019), African-American school teacher and education administrator
* Mary Dobbs, birth name of Mollie Sneden (1709–1810), American ferry service operator
* Mary Dobie (1850–1880), English-born New Zealand painter who was murdered
* Mary Dobkin (1902–1987), American sports coach and advocate for children
* Mary Dobson, ring name of Sarah Logan (born 1993), American professional wrestler
* Mary Dobson (1912–1977), English artist
* Mary Docherty (1908–2000), Scottish activist
* Mary Docter (born 1961), American speed skater
* Mary Docwra (1847–1914), British temperance activist
* Mary Dodson (1932–2016), American art director
* Mary Dohey (1933–2017), Canadian airline flight attendant who stopped a hijacking
* Mary Dolim (1925–2002), American children's writer
* Mary Donington (1909–1987), English musician and sculptor
* Mary Dooley, birth name of Nita Naldi (1894–1961), American stage performer and silent film actress
* Mary Dorcey (born 1950), Irish author, poet, feminist, and LGBT+ activist
* Mary Dover (fl. 1908), Canadian chemist
* Mary Downer (1924–2014), South Australian philanthropist and military personnel
* Mary Downing (c. 1815–1881), Irish poet and nationalist
* Mary Dozier, American psychologist
* Mary Draper (1719–1810), American woman who helped the Continental Army during the American Revolution
* Mary Dreier (1875–1963), American social reformer
* Mary Duff (born 1964), Irish country-, pop-, and folk singer
* Mary Duffy, American feminist fashion expert, spokeswoman, entrepreneur, author, and motivational speaker
* Mary Duggan (1925–1973), English cricketer
* Mary Dumont, American chef
* Mary Dunleavy (born 1966), American soprano
* Mary Dunlop (1912–2003), Irish dog trainer, activist, and philanthropist
* Mary Dunnell (fl. 1807–1811), English preacher
* Mary Durack (1913–1994), Australian author and historian
* Mary Durojaye (born 1990), English professional basketball player
* Mary Dutch (born 1944), American wheelchair curler
* Mary Dwight (born 1951), American former handball player
* Mary Dyckman (1886–1982), American advocate for labor protections
* Mary E. Balfour (fl. 1789–1810), Irish poet
* Mary E. Bibb (1820–1877 or the early 1880s), American-born Canadian educator and abolitionist leader
* Mary E. Bouligny (1839–1908), American socialite and author
* Mary E. Britton (1855–1925), American physician, educator, suffragist, journalist, and civil rights activist
* Mary E. C. Bancker (1860–1921), American author
* Mary E. Cobb (1852–1902), American manicurist and cosmetics manufacturer
* Mary E. Costanza (born 1937), American retired doctor and professor
* Mary E. Eato (1844–1915), African-American suffragist and teacher
* Mary E. Elliot (1851–1942), American writer and lecturer
* Mary E. Gladwin (1861–1939), English-born American nurse
* Mary E. Guy, American political scientist, public administration scholar, academic, and author
* Mary E. Haggart (1843–1904), American suffragist
* Mary E. Hazeltine (1868–1949), American librarian
* Mary E. Hewitt (1818–1894), American poet and editor
* Mary E. Ireland (1834–1927), American author and translator
* Mary E. Klotman (born 1954), American physician-scientist and academic administrator
* Mary E. Larimer, American psychologist and academic
* Mary E. Lovely (born 1956), American professor emeritus of economics
* Mary Stanley Low (1912–2007), British-Cuban political activist, surrealist poet, artist and Latin teacher
* Mary E. Merritt (1881–1953), American nurse
* Mary E. Peabody (1891–1981), American civil-rights- and anti-war activist
* Mary E. Reuder (1923–2017), American experimental psychologist, statistician, and licensed clinical psychologist
* Mary E. Schick (1885–1951), American librarian
* Mary E. Switzer (1900–1971), American public administrator and social reformer
* Mary E. Tusch (1874/1875–1960), American aviation collector
* Mary E. Van Lennep (1821–1844), American missionary, school founder, and memoirist
* Mary E. Williamson (1924–2012), American aviator
* Mary E. Wrinch (1877–1969), English-born Canadian artist
* Mary Eales (?–c. 1718), English food writer
* Mary Earle (1929–2021), Scottish-born New Zealand food technologist
* Mary Earley (1900–1993), American painter
* Mary Early (born 1975), American sculptor
* Mary Earps (born 1993), English professional footballer
* Mary East (c. 1716–1780), English tavern owner
* Mary Eastey (1634–1692), American woman executed in the Salem witch trials
* Mary Eastwood (1930–2015), American lawyer and civil rights advocate
* Mary Eaves (1805/1806–1875), English midwife
* Mary Eberstadt, American essayist, novelist, and nonfiction author
* Mary Eberts (born 1947), Canadian constitutional lawyer
* Mary Eccles, Viscountess Eccles (1912–2003), American-born British book collector and author
* Mary Edmonds (1922–2005), American biochemist
* Mary Edmonson (1832–1853), African-American abolitionist and slave
* Mary Eggers Tendler, American volleyball coach and former player
* Mary Ejercito (1906–2009), Filipino centenarian
* Mary Ekpere-Eta, Nigerian barrister and activist
* Mary Elmes (1908–2002), Irish aid worker
* Mary Emery (1844–1927), American philanthropist
* Mary Emmons (c. 1760–c. 1832), Indian-born American woman who served patriot Theodosia Bartow Prevost
* Mary Emmott (1866–1954), English political activist, suffragist, and baroness
* Mary Endico (born 1954), American watercolor artist
* Mary Engelbreit (born 1952), American artist
* Mary Enright (1880–1966), New Zealand teacher, journalist, and community worker
* Mary Epworth, English singer, songwriter, and composer
* Mary Erler, American literary scholar
* Mary Erskine (1629–1707), Scottish businesswoman and philanthropist
* Mary Essex, pen name of Ursula Bloom (1892–1984), English novelist, biographer, and journalist
* Mary Essiful (born 1993), Ghanaian footballer
* Mary Esslemont (1891–1984), Scottish general practitioner
* Mary Estlin (1820–1902), British abolitionist
* Mary Etherington, English horse breeder and conservationist
* Mary Europe (1885–1947), American pianist, organist, and music educator
* Mary Everard (1942–2022), English golfer
* Mary Ewing-Mulligan, American author, wine educator, and wine critic
* Mary Eyre (1923–2013), British sportswoman and administrator
* Mary F. Foskett (born 1961), Chinese-American New Testament scholar
* Mary F. Nixon-Roulet (1866–1930), American author
* Mary F. Sammons (born 1946), American businesswoman
* Mary F. Scranton (1832–1909), American Methodist Episcopal Church missionary
* Mary Faber de Sanger (c. 1798–?), African slave-trader
* Mary Fabilli (1914–2011), American poet, illustrator, art teacher, and museum curator
* Mary Fage (fl. 1637), English poet
* Mary Faherty (born 1960), Irish judge
* Mary Fahl (born 1958), American singer and actress
* Mary Fairburn (born 1933), English artist and musician
* Mary Fairfax (1922–2017), Polish-born Australian businesswoman and philanthropist
* Mary Fairhurst (1957–2021), American attorney, jurist, and Supreme Court Justice
* Mary Falk (1946–2020), British solicitor and yachtswoman
* Mary Fama (1938–2021), New Zealand applied mathematician
* Mary Fan, American professor of criminal law
* Mary Farkas (1911–1992), American Zen Buddhist teacher
* Mary Farmer (1940–2021), English educator, and weaver of tapestries and rugs
* Mary Farrar (born 1949), American retired victims' advocate
* Mary Farrelly (1866–1943), Australian social worker and diet reformer
* Mary Faulkner, pen name of Kathleen Lindsay (1903–1973), English writer of romance novels
* Mary Fay (born 1998), Canadian curler
* Mary Featherston (born 1943), English-born Australian interior designer
* Mary Fedden (1915–2012), English artist
* Mary Feik (1924–2016), American aviation engineer, mechanic, pilot, instructor, and aircraft restorer
* Mary Felicia Perera, birth name of Sonia Disa (born 1944), Sri Lankan actress, producer, and costume designer
* Mary Fell (born 1947), American poet and academic
* Mary Fels (1863–1953), German-born American philanthropist, Georgist, Zionist, suffragist, economist, author, and journal editor
* Mary Fennelly, Irish camogie player
* Mary Fergusson (1914–1997), British civil engineer
* Mary Fernández, American computer scientist and activist
* Mary Ferrar (1551–1634), English Anglican nun and mystic
* Mary Ferrell (1922–2004), American historian and independent researcher
* Mary Fielding (botanist) (1804–1895), British botanist and botanical illustrator
* Mary Fields (c. 1832–1914), American mail carrier
* Mary Fildes (1789-1792–1876), British reformer and suffragist
* Mary Fillis, 16th-century English Muslim-turned Christian
* Mary Finan (born 1944), Irish businesswoman
* Mary Finch (1508–1557), English courtier
* Mary Findlater (1865–1963), Scottish novelist and poet
* Mary Fink (1916–2000), American civil servant
* Mary Finnin (1906–1992), Australian artist, art teacher, and poet
* Mary Finsterer (born 1962), Australian composer and academic
* Mary Fitt, pseudonym of Kathleen Freeman (classicist) (1897–1959), English novelist and classical scholar
* Mary Fitzbutler Waring (1870–1958), American physician
* Mary Fitzpatrick (photographer) (born 1968), English photographer
* Mary Fitzpayne (born 1928), English artist
* Mary Flahive (born 1948), American professor of mathematics
* Mary Flanagan, American artist, author, educator, and designer
* Mary Flanagan (1943–?), English teenager who disappeared in 1959
* Mary Fleddérus (1886–1977), Dutch social reformer and researcher
* Mary Fleener (born 1951), American alternative comics artist, writer, and musician
* Mary Flood, American owner of Jake (rescue dog)
* Mary Florence Mare, real name of Molly F. Mare (1914–1997), English marine biologist
* Mary Florentine, American professor of psychoacoustics
* Mary Flower, American musician and music educator
* Mary Hannay Foott (1846–1918), Scottish-born Australian poet and editor
* Mary Foote (1872–1968), American painter
* Mary Ford (1924–1977), American guitarist and vocalist
* Mary Forster (1853–1885), English painter
* Mary Forster (Quaker) (c. 1620–1687), English Quaker campaigner
* Mary Forsyth, American-born English rugby union player
* Mary Fortune (c. 1833–1911), Australian writer
* Mary Fowkes (1954–2020), American physician and neuropathologist
* Mary Frank (born 1933), English-born American visual artist
* Mary Franklin (1800–1867), English schoolmistress
* Mary Franklin Smythe, American mother of socialite Helen Smythe Jaffray
* Mary Dillingham Frear (1870–1951), American First Lady of Hawaii, suffragist, and poet
* Mary Frecker, American mechanical engineer
* Mary Frere (1845–1911), English author
* Mary Frey (born 1948), American photographer and educator
* Mary Friday, Australian wheelchair basketball player
* Mary Frierson, real name of Wendy Rene (1947–2014), American soul singer and songwriter
* Mary Fristad, American past president of the Society of Clinical Child and Adolescent Psychology
* Mary Frith (c. 1584–1659), English pickpocket and fence
* Mary Frizzell (1913–1972), Canadian athlete
* Mary Froning (1934–2014), American AAGPBL player
* Mary Fubbister, alternate name of Isobel Gunn (1781–1861), Scottish laborer
* Mary Fulbrook (born 1951), British academic and historian
* Mary Fulkerson (1946–2020), American dance teacher and choreographer
* Mary Fuller (sculptor) (1922–2022), American sculptor and art historian
* Mary Fuzesi (born 1974), Hungarian-born Canadian retired gymnast
* Mary G. Boland, Irish-born American nurse
* Mary G. Burdette (1842–1907), American Baptist teacher, preceptor, writer, and missionary leader
* Mary G. Dietz (born c. 1951), American professor emerita of feminist philosophy
* Mary G. F. Bitterman (born 1944), American historian and former media executive
* Mary Gabrielse (born 1923), Dutch illustrator and former champion swimmer
* Mary Gadbury (c. 1610–after 1650), English merchant and impostor
* Mary Gaitskill (born 1954), American novelist, essayist, and short story writer
* Mary Galea (born 1951), Australian physiotherapist and neuroscientist
* Mary Galinski, American professor of medicine
* Mary Gallagher, American playwright and screenwriter
* Mary Onahan Gallery (1866–1941), American writer, critic, and editor
* Mary Galway (1864–1928), Irish trade unionist and suffragist
* Mary Gambale (born 1988), American former professional tennis player
* Mary Nevan Gannon (1867–1932), American architectural owner
* Mary Garber (1916–2008), American sportswriter
* Mary Garden (1874–1967), Scottish-American opera singer
* Mary Gardner (born 1943), American art historian and museum director; stepmother of businessman Bill Gates
* Mary Garrard (born 1937), American art historian and emerita professor
* Mary Garrett (1854–1915), American suffragist and philanthropist
* Mary Garson (born 1953), English-born Australian organic chemist and academic
* Mary Garson (nun) (1921–2007), Scottish Roman Catholic nun and psychologist
* Mary Gartside (c. 1755–1819), English water colourist and colour theorist
* Mary Gaudron (born 1943), Australian lawyer and judge
* Mary Gaunt (1861–1942), Australian novelist
* Mary Gauthier (born 1962), American folk singer-songwriter and author
* Mary Gawthorpe (1881–1973), English suffragette, socialist, trade unionist, and editor
* Mary Geaney (born 1954), Irish sportswoman
* Mary Geddes (1864–1955), New Zealand businesswoman, welfare worker, and community leader
* Mary Gedye (1834–1876), Australian watercolourist
* Mary Gehr (1910–1997), American painter and printmaker
* Mary Gehring, American plant biologist and epigeneticist
* Mary Gell (1894–1978), British Christian medical missionary
* Mary Gennoy (1951–2004), American activist
* Mary Gentle (born 1956), British science fiction- and fantasy author
* Mary Gergen (1938–2020), American social psychologist
* Mary Gernat (1926–1998), English painter and illustrator
* Mary Getui (born 1959), Kenyan theologian and professor of religious studies
* Mary Ghansah (born 1959), Ghanaian veteran gospel musician and ordained reverend minister
* Mary Gibby (1949–2024), British botanist and professor
* Mary Gideon (born 1989), Nigerian badminton player
* Mary Gilbert (?–1878), European settler of Australia
* Mary Gilchrist (1882–1947), Scottish chess player
* Mary Giles (1944–2018), American fiber artist
* Mary Gillham (1921–2013), Welsh naturalist, university lecturer, and writer
* Mary Gillick (1881–1965), English sculptor and medallist
* Mary Gillies (1800–1870), English children's author; sister of artist Margaret Gillies
* Mary Gillon (1898–2002), Scottish tram conductress
* Mary Gilmore (1865–1962), Australian writer and journalist
* Mary Girling (1827–1886), English religious leader
* Mary Giuliani Stephens (born 1955), American attorney and former mayor
* Mary Glackin, American scientist
* Mary Gladstone (1847–1927), Welsh political secretary, writer, and hostess
* Mary Glasspool (born 1954), American Anglican assistant bishop
* Mary Gleed Tuttiett, real name of Maxwell Gray (1846–1923), English novelist and poet
* Mary Gleim (1845–1914), Irish brothel madam
* Mary Glen-Haig (1918–2014), British Olympic fencer
* Mary Glowrey (1887–1957), Australian Roman Catholic nun and doctor
* Mary Gluckman (1917–1990), British linguist, adult educator, and political activist
* Mary Gnaedinger (1897–1976), American editor
* Mary Godfrey (1913–2007), American artist and art educator
* Mary Goldring (1923–2016), British business journalist and broadcaster
* Mary Goode (born 1979), Irish former field hockey player
* Mary Goodhew, English ballet teacher and former artistic director
* Mary Goore, stage name of Tobias Forge (born 1981), Swedish singer-songwriter, actor, and filmmaker
* Mary Gorman (1881–1915), New Zealand nurse
* Mary Gormley (born c. 1983), Northern Irish model and beauty pageant titleholder
* Mary Gospodarowicz, Canadian oncologist and professor
* Mary Goudie, Baroness Goudie (born 1946), English politician, life peer, humanitarian, and activist
* Mary Gould (silversmith), 18th-century English silversmith
* Mary Goulding (born 1996), New Zealand professional basketball player
* Mary Gow (1851–1929), English watercolourist
* Mary Graeme (1875–1951), English international badminton player
* Mary GrandPré (born 1954), American illustrator
* Mary Grannan (1900–1975), Canadian children's writer and radio personality
* Mary Graustein (1884–1972), American mathematician and university professor
* Mary Greaves (1907–1983), British civil servant and disability rights campaigner
* Mary Coombs Greenleaf (1800–1857), American Presbyterian missionary
* Mary Grew (1813–1896), American abolitionist and suffragist
* Mary Grierson (1912–2012), Welsh-born Scottish botanical artist and illustrator
* Mary Grieve (1906–1998), Scottish magazine editor and journalist
* Mary Grigoriadis (born 1942), American artist
* Mary Grigson (born 1971), Australian cross-country mountain biker
* Mary Grimes (1861–1921), British librarian and promoter of emigration
* Mary Grimstone (1796–1869), British poet, novelist, and socialist feminist
* Mary Guinan (born 1939), American doctor and dean
* Mary Guiney (1901–2004), Irish businesswoman
* Mary Gunn (1899–1989), South African librarian and biographer
* Mary Gunter (1586–1622), English Catholic ward and servant who converted to Protestantism
* Mary Gurney (1836–1917), British educationist
* Mary Gwenyth Lusby, birth name of Gwen Fleming (1916–2011), Australian medical doctor
* Mary H. Donlon (1893–1977), American judge
* Mary H.K. Choi, Korean American author, editor, and television- and print journalist
* Mary H. Murguia (born 1960), American lawyer and jurist
* Mary Haas (1910–1996), American linguist
* Mary Habicht (born 1943), American former tennis player
* Mary Habington, English recusant
* Mary Habsch (1931–2023), Belgian painter and printmaker
* Mary Hadler (1902–1971), American songwriter
* Mary Hagedorn (born 1954), American marine biologist
* Mary Hagen (1876–1944), German soprano
* Mary Haizlip (1910–1997), American aviator
* Mary Hallaren (1907–2005), American soldier
* Mary Hallock-Greenewalt (1871–1950), American inventor and pianist
* Mary Halton (1878–1948), American pathologist, gynecologist, obstetrician, women's health activist, and suffragist
* Mary Halvorson (born 1980), American avant-garde jazz composer and guitarist
* Mary Hames (1827–1919), New Zealand dressmaker, farmer, and domestic servant
* Mary Hamman (1907–1984), American writer and editor
* Mary Hammond, English vocal coach
* Mary Hampson (1868–1944), Australian textile artist
* Mary Hampton, English folk singer, songwriter, accordionist, and guitarist
* Mary Handen, Papua New Guinean businesswoman and accountant
* Mary Hanna (born 1954), Australian equestrian
* Mary Hardwick (1913–2001), English tennis player
* Mary Harfield (1879–1970), Australian-British archaeologist and nurse
* Mary Harley (1865–1962), American physician
* Mary Harlow (born 1956), English archaeologist and classical scholar
* Mary Harriman Rumsey (1881–1934), American social activist and government official
* Mary Harron (born 1953), Canadian film director
* Mary Hartwell (1747–1846), American woman who played a prominent role in the American Revolutionary War
* Mary Harwood (c. 1702–c. 1753), American daughter of Mary Walcott
* Mary Hatten, American professor of neuroscience
* Mary Eliza Haweis (1848–1898), British author, scholar of Geoffrey Chaucer, illustrator, and painter
* Mary Hawkesworth (born 1952), American professor of political science and women's- and gender studies
* Mary Hawn, American surgeon and professor
* Mary Hawton (1924–1981), Australian tennis player
* Mary Hayden (1862–1942), Irish historian, Irish-language activist, and campaigner for women's causes
* Mary Hayhoe, Australian American psychologist who researches vision
* Mary Hayley (1728–1808), English businesswoman
* Mary Hayllar (1862–1950), English artist
* Mary Hays (1759–1843), English writer and feminist
* Mary Hays (American Revolutionary War) (1754–1832), American Revolutionary War soldier
* Mary Hearn (1891–1969), Irish gynaecologist
* Mary Hearne (fl. 1718), English novelist
* Mary Hecht (1931–2013), American-born Canadian sculptor
* Mary Heebner (born 1951), American artist and author
* Mary Heeley (1911–2002), English tennis player
* Mary Hefferan (1873–1948), American bacteriologist and community leader
* Mary Hegarty, Irish opera soprano singer
* Mary Hegarty (scientist), Irish-American psychologist and professor
* Mary Hegeler Carus (1861–1936), American engineer, editor, and entrepreneur
* Mary Heilmann (born 1940), American painter
* Mary Heimann, American historian and professor
* Mary Heisig (1913–1966), American artist
* Mary Hemingway Rees (1887–1954), English psychiatrist
* Mary Henle (1913–2007), American psychologist
* Mary Hennell (1802–1843), British reforming writer
* Mary Hepburn (born 1949), Scottish obstetrician and gynaecologist
* Mary Heron (fl. 1786–1792), English writer
* Mary Herring (1895–1981), Australian medical practitioner and community worker
* Mary Hesse (1924–2016), English philosopher and professor of science
* Mary Hewins (1914–1986), British working woman
* Mary Higgs (1854–1937), British writer and social reformer
* Mary Higham (1819–1883), Australian businesswoman
* Mary Hilson, English researcher and academic
* Mary Hoare (1744–1820), English painter
* Mary Hobart (1851–c. 1930), American physician
* Mary Hobhouse (1864–1901), Irish poet and novelist
* Mary Hobry (?–1688), English midwife executed for murder
* Mary Hobson (1926–2020), English writer, poet, and translator
* Mary Hobson (curler), American curler
* Mary Hockaday (born 1962), British journalist and academic administrator
* Mary Hockaday (physicist) (born 1957), American physicist
* Mary Hocking (1921–2014), British writer
* Mary Hodgson (?–1719), English soprano
* Mary Hodson (born 1946), English middle-distance runner
* Mary Hoffman (born 1945), British writer and critic
* Mary Hogan (?–1954), American murder victim
* Mary Hogarth (1819–1837), Scottish sister-in-law of English novelist Charles Dickens
* Mary Holbrook (1939–2019), British cheesemaker and curator
* Mary Holda (1915–2016), American AAGPBL player
* Mary Hollingsworth (born 1950), British historian
* Mary Holloway (1917–?), English athlete
* Mary Homer (born 1958), British businesswoman
* Mary Homfray (?–1758), Welsh mother of English industrialist Francis Homfray
* Mary Hood (born 1946), American fiction writer
* Mary Hood (businesswoman) (c. 1822–1902), New Zealand businesswoman
* Mary Hooper (author) (1829–1904), English writer
* Mary Hopkin (born 1950), Welsh singer
* Mary Hopper (born 1951), American choral conductor and music minister
* Mary Horgan, Irish physician of infectious diseases
* Mary Horner Lyell (1808–1873), English conchologist and geologist
* Mary Hottinger (1893–1978), Scottish translator and editor
* Mary Houghton, American banker and company founder
* Mary Howarth (c. 1858–after 1934), British journalist and newspaper editor
* Mary Howell (1932–1998), American physician, psychologist, lawyer, mentor, musician, and mother
* Mary Howgill (1623–before 1681), English Quaker
* Mary Howitt (1799–1888), English poet and author
* Mary Hume-Rothery (1824–1885), British writer and campaigner for medical reform
* Mary Huntoon (1896–1970), American artist and art therapist
* Mary Hutson (1884–1982), American civil engineer
* Mary Hyde (1779–1864), English-born Australian businesswoman and criminal
* Mary Hynes, Canadian radio- and television broadcaster
* Mary Ibberson (1892–1979), British musician and teacher
* Mary Ihedioha (born 1962), Nigerian handball player
* Mary Impey (1749–1818), English natural historian and patron of the arts
* Mary Imrie (1918–1988), Canadian architect
* Mary Ingalls (1865–1928), American older sister of author Laura Ingalls Wilder
* Mary Ingraham (1901–1982), Bahamian suffragist
* Mary Inman (1894–1985), American political activist and writer
* Mary Irvine (born 1956), Irish judge
* Mary Irvine (engineer) (1919–2001), British engineer
* Mary Isenhour, American political strategist, campaign manager, and government official
* Mary Ito, Canadian television- and radio personality
* Mary Ivins (1944–2007), American newspaper columnist, author, and political commentator
* Mary J. Blige (born 1971), American singer and actress
* Mary J. Farnham (1833–1913), English-born American missionary and temperance advocate
* Mary J. Gregor (1928–1994), American author, translator, and professor
* Mary J. Hickman, Irish-born American professor and scholar
* Mary J. Hornaday (1906–1982), American journalist
* Mary J. Newill (1860–1947), English painter, embroiderer, teacher, book illustrator, and stained glass designer
* Mary J. Safford (1834–1891), American nurse, physician, educator, and humanitarian
* Mary J. Schleppegrell (born 1950), American applied linguist and professor of education
* Mary J. Schoelen, American senior judge
* Mary J. Serrano (c. 1840–1923), Irish-born American translator, writer, and poet
* Mary Jacobus (1957–2009), American journalist
* Mary Jacobus (literary scholar) (born 1944), British literary scholar
* Mary Clubwala Jadhav (1909–1975), Indian philanthropist
* Mary Jarred (1899–1993), English opera singer
* Mary Jefferson Eppes (1778–1804), daughter of American president Thomas Jefferson
* Mary Jemison (1743–1833), British frontierswoman
* Mary Jerram (born 1945), New Zealand-born Australian coroner, magistrate, solicitor, and teacher
* Mary Jesse (born 1964), American technology- and media pioneer
* Mary Jewels (1886–1977), English painter
* Mary Jiménez, Mexican ranchera singer
* Mary Joanne Tarola, birth name of Linda Douglas (1928–2017), American model and actress
* Mary Johnstone, birth name of Moura Lympany (1916–2005), English concert pianist
* Mary Jolliffe (1923–2014), Canadian theatre- and performing arts publicist
* Mary Jowett, New Zealand architect
* Mary Joyce, English love interest of poet John Clare
* Mary Joynson (1924–2013), British childcare worker
* Mary K. Buck (1849–1901), Bohemian-born American author
* Mary K. Estes, American virologist and professor
* Mary K. Firestone, American professor of soil microbiology
* Mary K. Gaillard (born 1939), American theoretical physicist
* Mary K. Hawes, American computer scientist
* Mary K. Okheena (born 1957), Inuvialuit graphic artist
* Mary K. Pershall, Australian children's author
* Mary K. Rothbart (born 1940), American professor emerita of psychology
* Mary K. Trigg, American associate professor of women's and gender studies
* Mary K. Trotter (1859–1925), American artist
* Mary Kaestner (1882–?), American opera singer
* Mary Kaiser (1948–2011), American chemist
* Mary Kalantzis (born 1949), Australian author and academic
* Mary Kaldor (born 1946), British academic and professor
* Mary Kalergis (born 1951), American author, photographer, and interviewer
* Mary Kalin Arroyo (born 1944), New Zealand-born Chilean botanist and professor of biology
* Mary Kalsrap, Vanuatuan entrepreneur
* Mary Kane (born 1962), American attorney
* Mary Kardash (1913–1994), Canadian socialist and feminist activist
* Mary Karr (born 1955), American poet, essayist, and memoirist
* Mary Katrantzou (born 1983), Greek fashion designer
* Mary Kay (landscape photographer), Greek landscape photographer
* Mary Kaye (1924–2007), American guitarist and performer
* Mary Kearney, American biologist
* Mary Keegan (born 1953), British retired accountant and civil servant
* Mary Kekedo (c. 1919–1993), Papuan educator
* Mary Eliza Kennard (1850–1936), English novelist and writer of non-fiction
* Mary Kenny (born 1944), Irish journalist, broadcaster, and playwright
* Mary Kerr (1905–1998), Scottish bondager and domestic servant
* Mary Kershaw, American museum curator and director
* Mary Kessell (1914–1977), English figurative painter, illustrator, designer, and war artist
* Mary Kiani, Scottish singer
* Mary Kilbreth (1869–1957), American anti-suffragist
* Mary Killen, Northern Irish etiquette expert
* Mary Killman (born 1991), American synchronized swimmer
* Mary Kinder (1909–1981), American gun moll; girlfriend of gangster Harry Pierpont and associate of gangster John Dillinger
* Mary Kingsley (1862–1900), English ethnographer, writer, and explorer
* Mary Kingston (born 1970), Irish children's television presenter
* Mary Kini, Papua New Guinean anti-war activist
* Mary Kinnan (1763–1848), American woman held captive by Shawnee
* Mary Kinuthia (born 1990), Kenyan footballer
* Mary Kinzie (born 1944), American poet and critic
* Mary Kirchoff, American author of fantasy and young adult novels
* Mary Kirkland, Canadian set decorator
* Mary Kirkpatrick (c. 1863–1943), New South Wales midwife
* Mary Kirkwood (1904–1995), American artist and professor
* Mary Kisler, New Zealand curator, author, art historian, and art commentator
* Mary Kissel, American former journalist
* Mary Kitagawa (born 1935), Canadian educator
* Mary Kittamaquund (c. 1634–c. 1654), Piscataway woman who helped establish the Maryland colony
* Mary Klass (born 1935), Singaporean former sprinter
* Mary Klicka (1921–2007), Canadian-American registered dietitian and food technologist
* Mary Knatchbull (1610–1696), English Roman Catholic abbess
* Mary Knisely (born 1959), American retired middle- and long-distance runner
* Mary Knowling (1923–2013), South African medical doctor
* Mary Knowlton (?–2016), American woman whom a police officer accidentally shot and killed
* Mary Koboldt (born 1964), American former field hockey player
* Mary Koga (1920–2001), Japanese-American photographer and social worker
* Mary Kok (born 1940), Dutch swimmer
* Mary Kollock (1832–1911), American landscape painter
* Mary Kom (born 1982), Indian Olympic boxer
* Mary Koncel, American poet
* Mary Kostakidis (born 1954), Australian journalist and political commentator
* Mary Krebs-Brenning (1851–1900), German pianist
* Mary Krueger, American lieutenant general and physician
* Mary L. Boas (1917–2010), American mathematician, physics professor, and author
* Mary L. Cleave (1947–2023), American engineer and NASA astronaut
* Mary L. Coloe (born 1949), Australian Roman Catholic nun and New Testament biblical scholar
* Mary L. Disis, American physician-oncologist and medical journal editor
* Mary L. Doe (1836–1913), American suffragist, temperance reformer, teacher, and author
* Mary L. Droser, American paleontologist
* Mary L. Dudziak (born 1956), American legal theorist, civil rights historian, educator, and expert on leading foreign policy and international relations
* Mary L. Geffs (1854–1939), American author, speaker, and suffragist
* Mary L. Kraft, American professor of chemical- and biological engineering
* Mary L. Langworthy (1872–1949), American dramatic coach, writer, lecturer, clubwoman, and civic leader
* Mary L. Mallett (1860–1944), American temperance advocate
* Mary L. Mandich, American retired physical chemistry researcher
* Mary L. Marazita, American geneticist and professor of dental medicine
* Mary L. McMaster, American oncologist and clinical trialist
* Mary L. Mikva, American jurist and judge
* Mary L. Moreland (1859–1918), American minister, teacher, and writer
* Mary L. Pendered (1858–1940), English novelist
* Mary L. Proctor (born 1960), American artist
* Mary La Chapelle (born 1955), American short story writer
* Mary Lacity (born 1963), American professor, computer scientist, and researcher
* Mary Lacy (c. 1740–1801), British sailor, shipwright, and memoirist
* Mary Lacy, American district attorney in the Killing of JonBenét Ramsey
* Mary Laffoy (born 1945), Irish judge
* Mary Lakeland (?–1645), English woman executed for witchcraft
* Mary Lamb (1764–1847), English writer
* Mary Landers (1905–1990), American mathematician
* Mary Landry, American disaster-management official and retired rear admiral of the U.S. Coast Guard
* Mary Lane (born 1987), American non-fiction writer, journalist, and art historian
* Mary Langan (born 1948), Irish Roman Catholic nun
* Mary Lanwi (born 1921), Marshallese educator, activist, and promotor of traditional handicrafts
* Mary Larteh, Liberian tribal chief
* Mary Lascaris, Australian past member of children's musical group Hi-5 (Australian group)
* Mary Laschinger (born c. 1959), American former business executive
* Mary Lasker (1900–1994), American health activist and philanthropist
* Mary Latter (1725–1777), English poet, essayist, and playwright
* Mary Lattimore (born 1980), American harpist
* Mary Laughren, Australian linguist
* Mary Lavin (1912–1996), American-born Irish short story writer and novelist
* Mary Lawler (1944–1998), American speed skater
* Mary Lawrance (1781–1845), English botanical illustrator
* Mary Lawrenson (1850–1943), English activist and educationalist
* Mary Leacy (born 1986), Irish sportsperson
* Mary Leadbeater (1758–1826), Irish Quaker author and diarist
* Mary Leader (born 1948), American poet and lawyer
* Mary Leaf (1925–2004), Akwesasne Mohawk basket maker
* Mary Leakey (1913–1996), British paleoanthropologist
* Mary Leapor (1722–1746), English poet
* Mary Greenleaf Clement Leavitt (1830–1912), American educator, suffragist, and women's rights activist
* Mary Lefkowitz (born 1935), American classical scholar and writer
* Mary Leigh (1885–1978), English political activist and suffragette
* Mary Leng, British philosopher and professor of mathematics and science
* Mary Lenig, American contestant on The Amazing Race (American TV series)
* Mary Leo (1895–1989), New Zealand religious sister
* Mary Leonard (c. 1845–1912), American attorney and accused murderer
* Mary Leonard (pediatrician), American pediatric nephrologist, epidemiologist, and professor
* Mary lePage (1879–1962), American Hindu
* Mary Le Ravin (1905–1992), African American visionary artist and ordained minister
* Mary Lerner (1882–1938), American writer
* Mary LeSawyer (1917–2004), American opera singer of Ukrainian descent
* Mary Lescher (1846–1927), British Mother Superior, school founder, and college head
* Mary Leta Dorothy Slaton, birth name of Dorothy Lamour (1914–1996), American actress and singer
* Mary Leue, American educator and community activist
* Mary Leunig (born 1950), Australian visual artist
* Mary Levison (1923–2011), British leader of the Church of Scotland
* Mary Liddell (1877–1967), Irish-born Australian journalist and feminist
* Mary Lidstrom (born 1951), American professor of microbiology
* Mary Kini Lifu (born 1994), Solomon Islander weightlifter
* Mary Lightfoot (1889–1970), American painter and printmaker
* Mary Lillian Ellison, real name of The Fabulous Moolah (1923–2007), American professional wrestler, promoter, and trainer
* Mary Lim (born 1948), Bruneian businesswoman and educator
* Mary Lindell (1895–1987), English nurse
* Mary Lindemann (born 1949), American historian and professor emerita of history
* Mary Lindsey (fl. 1697–1713), British singer
* Mary Lines (1893–1978), British athlete
* Mary Linley (1758–1787), English musician
* Mary Linskill (1840–1891), English novelist, short-story writer, and poet
* Mary Linwood (1755–1845), English needle woman and school mistress
* Mary Littlejohn (1903–1988), Canadian figure skater
* Mary Livermore (1820–1905), American journalist, abolitionist, and advocate of women's rights
* Mary Lobb (1878–1939), English Land Army volunteer; life companion of May Morris
* Mary Lobel (1900–1993), British historian
* Mary Lobo (born 1922/1923), Indian-born Singaporean social worker, clubwoman, and women's rights activist
* Mary Lokko, Ghanaian activist
* Mary Longman (born 1964), Canadian artist
* Mary Loomis, American Union nurse during the American Civil War
* Mary Looney (1886–1961), New Zealand civilian- and wartime nurse
* Mary Lorson, American writer, musician, and composer
* Mary Losseff (1907–1972), British singer and actress
* Mary Loveless (1899–1991), American physician and immunologist
* Mary Lowndes (1857–1929), English stained-glass artist and suffragist
* Mary Loyola (1845–1930), English Roman Catholic nun and author
* Mary Luba (born 1993), American NWSL player
* Mary Lubawski (born 1965), Canadian former breaststroke swimmer
* Mary Lucas (1882–1952), English composer and pianist
* Mary Lucia (born 1970), American on-air radio personality
* Mary Lucier (born 1944), American visual artist and pioneer in video art
* Mary Luckhurst, British writer, academic, and theatre director
* Mary Lum (artist) (born 1951), American visual artist
* Mary Lumpkin (1832–1905), American philanthropist and slave
* Mary Lutyens (1908–1999), English author
* Mary M. Duggan (1921–2009), American children's book author
* Mary M. Frasier (1938–2005), African American educator
* Mary M. Haskell (1869–1953), American congregationalist missionary in Bulgaria
* Mary M. Horowitz, American oncologist
* Mary M. Lepper (1929/1930–1984), American political scientist and scholar of public administration
* Mary M. Lisi (born 1950), American inactive district judge
* Mary M. McDermott, American professor of medicine
* Mary M. Ourisman (born 1946), American political consultant
* Mary M. Purser (1913–1986), American painter
* Mary M. Rowland (born 1961), American district judge
* Mary M. Schroeder (born 1940), American attorney, jurist, and circuit judge
* Mary Ma (1952/1953–2019), Chinese businesswoman and investor
* Mary Maan, Canadian candidate in the Results of the 2007 Ontario general election by riding
* Mary MacArthur (1904–1959), Canadian scientist
* Mary Macarthur (1880–1921), Scottish suffragist and trades unionist
* Mary Macaulay (1865–1944), American telegraph operator and labor union official
* Mary MacCarthy (1882–1953), English writer
* Mary MacGregor (born 1948), American singer
* Mary MacIsaac (1893–2006), Canadian supercentenarian
* Mary Mackall Gwinn, birth name of Mamie Gwinn Hodder (1860–1940), American educator
* Mary Mackellar (1834–1890), Scottish poet, writer, and translator
* Mary Macken-Horarik, Australian linguist
* Mary Mackenzie (mezzo-soprano), American classical mezzo-soprano and voice teacher
* Mary Mackey (born 1945), American novelist, poet, and academic
* Mary Mackie (born early 1940s), English writer
* Mary MacKillop (1842–1909), Australian Roman Catholic nun and educator
* Mary MacLane (1881–c. 1929), Canadian-born American writer
* Mary MacMakin (born 1929/1930), American aid worker
* Mary Macmaster (born 1955), Scottish harpist and singer
* Mary MacPherson (1821–1898), Scottish Gaelic poet
* Mary Macpherson, British socialist activist
* Mary Macqueen (1912–1994), Australian artist
* Mary Madeiras, American television soap opera director
* Mary Madeline Bonfils, birth name of May Bonfils Stanton (1883–1962), American heiress and philanthropist
* Mary Mageau (1934–2020), American-born Australian writer, harpsichordist, and composer
* Mary Main (1943–2023), American psychologist
* Mary Mairs-Chapot (born 1944), American equestrian
* Mary Maker, South Sudanese refugee, ambassador, and education advocate
* Mary Malahlela (1916–1981), South African physician
* Mary Malcolm (1918–2010), British radio- and television presenter and producer
* Mary Malcolmson, Canadian Girl Guide company founder
* Mary Mallen (fl. 2013–2016), American singer and actress
* Mary Mallon (1869–1938), Irish-born American cook
* Mary Mallon (academic) (1957–2006), British-New Zealand management academic and professor
* Mary Mancini, American political activist and former candidate
* Mary Manhein, American forensic anthropologist
* Mary Many Days Robidoux (c. 1805–1884), Métis daughter of fur trader Joseph Robidoux IV
* Mary Mapes (born 1956), American journalist, former television news producer, and author
* Mary Marcy (1877–1922), American socialist author, pamphleteer, poet, and magazine editor
* Mary Marechal, Belgian tennis player
* Mary Margesson, British daughter of politician David Margesson, 1st Viscount Margesson
* Mary Marguerite Leneen Kavanagh, birth name of Leneen Forde (born 1935), Canadian retired solicitor
* Mary Marlowe Sommer, American judge and lawyer
* Mary Marques (1896–2008), Portuguese supercentenarian
* Mary Marquis (born 1935), Scottish former television interviewer and presenter
* Mary Marre (1920–2005), British voluntary worker and public servant
* Mary Marr Platt, real name of Polly Platt (1939–2011), American film producer, production designer, and screenwriter
* Mary Marzke (?–2020), American anthropologist
* Mary Mason (born 1954), English singer
* Mary Massey (1915–1974), American historian
* Mary Masters (1694?–1759?), English poet and letter-writer
* Mary Matalin (born 1953), American political consultant
* Mary Matheson (1896–1969), Australian psychologist
* Mary Mathew (1724–1777), Irish diarist
* Mary Mattatall (born 1960), Canadian curler and coach
* Mary Mattingly (born 1978), American visual artist
* Mary Matz (1931–2013), American minister and theologian
* Mary Maverick (1818–1898), American pioneer and author of memoirs
* Mary Mayhew (born 1965), American lobbyist
* Mary Mayo (1924–1985), American singer
* Mary Mazur, American producer
* Mary Mazzio, American documentary filmmaker, attorney, and former Olympic rower
* Mary Mazzio-Manson (born 1998), American rower
* Mary Mbewe, Zambian journalist
* Mary McAnally (1945–2016), English television producer and tennis player
* Mary McAteer (born 2004), Welsh professional footballer
* Mary McBride (musician), American pop rock singer
* Mary McCagg (born 1967), American rower
* Mary McCallum (born 1961), Zambian-born New Zealand publisher, author, and journalist
* Mary McCammon (1927–2008), British mathematician and professor
* Mary McCann (1890–1966), Irish-born American woman who rescued boat passengers
* Mary McCartney (born 1969), English photographer, documentary filmmaker, cookbook author, and activist
* Mary McCarty (baseball) (1931–2009), American AAGPBL player
* Mary McCaslin (1946–2022), American folk singer
* Mary McClain, real name of Diamond Teeth Mary (1902–2000), American blues- and gospel singer and vaudeville entertainer
* Mary McCleary (born 1951), American artist
* Mary McClintock Fulkerson (born 1950), American Protestant theologian, scholar, and professor emerita
* Mary McConkey (1916–1981), Canadian competitive swimmer
* Mary McConneloug (born 1971), American racing cyclist
* Mary McCormic (1889–1981), American operatic soprano and professor of opera
* Mary McCoy (1820s–1899), Irish nurse
* Mary McCreary, American singer, pianist, and composer
* Mary McCrossan (1865–1934), English painter
* Mary McDermott (fl. 1832), Irish poet
* Mary McDonagh (1849–?), Irish poet
* Mary McEldowney-Evanson (1921–2019), American environmentalist
* Mary McEvoy (artist) (1870–1941), English artist
* Mary McFadden (1938–2024), American art collector, editor, fashion designer, and writer
* Mary Cornwell McFarland (1868–1943), American daughter of Presbyterian missionary Samuel G. McFarland
* Mary McGeachy (1901–1991), Scottish-Canadian diplomat and international civil servant
* Mary McGrory (1918–2004), American journalist and columnist
* Mary McGuckian (born 1963), Northern Irish film director
* Mary McHenry (1933–2021), American academic
* Mary McIlquham (1901–?), English tennis player
* Mary McLean (1866–1949), New Zealand school principal
* Mary McLoughlin (1901–1956), Irish woman who served in the 1916 Easter Rising
* Mary McMullen (1920–1986), American mystery writer
* Mary McMurtrie (1902–2003), Scottish botanical artist and horticulturalist
* Mary McNamara (born 1963), American journalist and television critic
* Mary McNeill, birth name of Sidney McCall (1865–1954), American novelist and poet
* Mary McNeill (doctor) (1874–1928), Scottish suffragist and doctor
* Mary McNish (c. 1926–2013), Australian teacher and activist
* Mary McPartlan (1955–2020), Irish singer, musician, music director, and producer
* Mary McQueen (1860–1945), New Zealand Presbyterian deaconess, orphanage matron, and social worker
* Mary McShain (1907–1998), Irish-American landowner and benefactor
* Mary McVeigh (born 1981), American retired soccer player
* Mary Meader (1916–2008), American aerial photographer and explorer
* Mary Medd (1907–2005), English architect
* Mary Meeke, alternate name of Elizabeth Meeke (1761–c. 1826), English author, translator, and children's writer
* Mary Meeker (born 1959), American venture capitalist and former security analyst
* Mary Meerson (1902–1993), French ballet dancer, model, and archivist
* Mary Meigs (1917–2002), American-born Canadian painter and writer
* Mary Meijer-van der Sluis (1917–1994), Dutch fencer and singer
* Mary Meilak (1905–1975), Maltese poet
* Mary Melfi (born 1951), Italian Canadian writer
* Mary Melone (born 1964), Italian Roman Catholic nun and theologian
* Mary Menéndez (1941–1989), American murder victim
* Mary Mensah (born 1963), Ghanaian sprinter
* Mary Meriam (born 1955), American poet and editor
* Mary Meyers (1946–2024), American speed skater
* Mary Mgonja, Tanzanian agricultural scientist and plant breeder
* Mary Middlemore (?–1618), English courtier
* Mary Middleton (1870–1911), Scottish political activist
* Mary Midgley (1919–2018), English philosopher
* Mary Midnight, a pen name of Christopher Smart (1722–1771), English poet
* Mary Mihelakos, Australian music promoter and journalist
* Mary Millar (1936–1998), English singer and actress
* Mary Millben (born 1982), American singer
* Mary Milligan (1935–2011), American Roman Catholic theologian and university administrator
* Mary Milne, Canadian singer-songwriter
* Mary Milne (athlete) (1914–2014), English athlete
* Mary Milner (19th-century writer) (1797–1863), English writer and editor
* Mary Mims (1882–1967), American educator, sociologist, agriculture sociologist, and extension agent
* Mary Miranda, American contestant on The Voice (American TV series) season 4
* Mary Miss (born 1944), American artist and designer
* Mary Moberly (1853–1940), British educator
* Mary Moffat (1795–1871), English missionary
* Mary Mohler (born 1984), American former competition swimmer
* Mary Mollineux (1651–1696), English Quaker poet
* Mary Molloy (1880–1954), American academic
* Mary Molony (1878–1921), Irish suffragette campaigner
* Mary Molson (1846–1881), American suffragist, lecturer, and orator
* Mary Monck (1677?–1715), Irish poet
* Mary Money (?–1905), English murder victim
* Mary Montgomerie Lamb, birth name of Violet Fane (1843–1905), English poet, writer, and ambassadress
* Mary Montgomery (1956–2017), American competition swimmer
* Mary Moodley (1913–1979), South African trade unionist and anti-apartheid activist
* Mary Moorman (born 1932), American woman who chanced to photograph U.S. President John F. Kennedy after his assassination
* Mary Caroline Moorman (1905–1994), English historian and biographer
* Mary Moraa (born 2000), Kenyan athlete
* Mary Morain (1911–1999), American therapist, social reformer, and secular humanist
* Mary More (1732–1807), English Roman Catholic nun
* Mary Moreau (born 1955/1956), Canadian jurist and former judge
* Mary Morello (born 1923), American activist
* Mary Morez (1946–2004), American Navajo painter
* Mary Morrissy (born 1957), Irish novelist and short story writer
* Mary Morten, American activist
* Mary Mortimer (1816–1877), English-born American educator
* Mary Moseley (1878–1961), Bahamian newspaper editor
* Mary Moser (1744–1819), English painter
* Mary Moss (1864–1914), American author and literary critic
* Mary Mossell Griffin (1882–1968), American writer, clubwoman, and suffragist
* Mary Mostert (1929–2016), American Mormon political writer and activist
* Mary Mothersill (1923–2008), Canadian philosopher
* Mary Moylan (1936–1995), American nurse-midwife and political activist
* Mary Muir (1881–1962), New Zealand nurse
* Mary Mulenga (born 1998), Zambian footballer
* Mary Mullarkey (1943–2021), American Supreme Court chief justice
* Mary Mullen (?–1962), American murder victim
* Mary Müller (1820–1901), New Zealand campaigner for women's suffrage- and rights
* Mary Mulry, American demographic statistician
* Mary Mulvihill (1959–2015), Irish scientist, radio television presenter, author, and educator
* Mary Murdoch (1864–1916), Scottish physician and suffragist
* Mary Murtfeldt (1839–1913), American entomologist, botanist, botanical collector, writer, and editor
* Mary Musani (born 1944), Ugandan hurdler
* Mary Musgrove (c. 1700–1765), American leading figure in early Georgia history
* Mary Musoke, Ugandan table tennis player
* Mary Mwakapila (born 1995), Zambian footballer
* Mary Myers (1849–1932), American balloonist and inventor
* Mary N. Frampton (1930–2006), American photographer and environmentalist
* Mary N. Meeker (1921–2003), American educational psychologist and entrepreneur
* Mary N. Torrey (1910–1998), American mathematical statistician and quality control specialist
* Mary Nakhumicha Zakayo (born 1979), Kenyan Paralympic track athlete
* Mary Nalule (born 1997), Ugandan cricketer
* Mary Naylor (born 1926), British-American retired variety entertainer
* Mary Nazzal-Batayneh (born 1979), Palestinian barrister, social entrepreneur, and impact investor
* Mary Neal (1860–1944), English social worker, suffragette, and English folk dance collector
* Mary Nerney (1938–2013), American women's rights activist
* Mary Nesbitt (1742/1743–1825), English upper class socialite and courtesan
* Mary Nesbitt Wisham (1925–2013), American AAGPBL player
* Mary Neumayr (born 1964), American government official
* Mary Newbery Sturrock (1892–1985), Scottish artist
* Mary Newcomb (artist) (1922–2008), British artist
* Mary Newport (1954/1955–?), American author, public speaker, and advocate
* Mary Ney (born 1949), British public servant
* Mary Ngalo (?–1973), South African anti-apartheid activist who also fought for women's rights
* Mary Nguyen (born 1976), American journalist and attorney
* Mary Nicolay (1850–1939), British Australian nurse and hospital matron
* Mary Nightingale (born 1963), English journalist and television presenter
* Mary Ní Mháille (?–1525), Irish noblewoman
* Mary Nissenson (1952–2017), American television journalist, entrepreneur, social activist, and university instructor
* Mary Njoki (born 1989), Kenyan businesswoman, executive, and entrepreneur
* Mary Noble (1911–2002), Scottish seed pathologist
* Mary Noe, American educator, writer, and lecturer
* Mary Nomura (born 1925), Japanese-American singer
* Mary Norris (1932–2017), Irish victim of human rights abuse
* Mary Norris (copy editor) (born 1952), American author, writer, and copy editor
* Mary Northridge, American epidemiologist and former editor-in-chief
* Mary Norwak (1929–2010), English food writer
* Mary Norwood (tennis) (born 1966), American former professional tennis player
* Mary Nótár (born 1985), Hungarian singer
* Mary Nourse (1880–1971), American educator and writer
* Mary Novik, Canadian novelist
* Mary Nwachukwu (born 1969), Nigerian handball player
* Mary Nyburg (1918–2006), American potter and teacher
* Mary Nzimiro (1898–1993), Nigerian businesswoman and activist
* Mary O. Furner, American historian
* Mary Obering (1937–2022), American painter
* Mary Odili (born 1952), Nigerian judge
* Mary of Bethezuba, 1st-century Jewish cannibal
* Mary of Saint Peter (1816–1848), French Discalced Carmelite nun
* Mary of Shaftesbury, 12th-century English Roman Catholic abbess
* Mary of St. Jerome Tourneux (1808–1896), French Roman Catholic nun
* Mary of the Divine Heart (1863–1899), German noblewoman and Roman Catholic nun
* Mary of the Passion (1839–1904), French Roman Catholic nun and missionary
* Mary Okwakol (born 1951), Ugandan university professor, academic administrator, zoologist, and community leader
* Mary Olmsted (1919–2018), American ambassador and economist
* Mary Onyali-Omagbemi (born 1968), Nigerian former sprinter
* Mary Opeloge (born 1992), Samoan weightlifter
* Mary Oppen (1908–1990), American activist, artist, photographer, poet, and writer
* Mary Orr (1910–2006), American author
* Mary Orr (figure skater) (born 1996), Canadian pair skater
* Mary Orwen (1913–2005), American artist
* Mary Oshlag (1942–2021), American bridge player
* Mary Osijo (born 1996), Nigerian weightlifter
* Mary Ostergren (born 1960), American biathlete
* Mary Otto, American medical journalist
* Mary Ewing Outerbridge (1852–1886), American woman who introduced tennis to her country
* Mary Overlie (1946–2020), American choreographer, dancer, theater artist, professor, author, and the originator of the Six Viewpoints technique for theater and dance
* Mary Oxlie (fl. 1616), Scottish- or Northumbrian poet
* Mary Oyama Mittwer (1907–1994), Japanese American journalist and community organizer
* Mary O'Donnell (born 1954), Irish novelist, poet, journalist, broadcaster, and teacher
* Mary O'Donoghue (born 1975), Irish fiction writer, poet, and translator
* Mary O'Grady, American editor and columnist
* Mary O'Hagan (1823–1876), Irish Roman Catholic abbess
* Mary O'Kane (born 1954), Australian scientist and engineer
* Mary O'Kelly de Galway (1905–1999), Irish Belgian resistance operative
* Mary O'Riordan, American molecular biologist, professor, and dean
* Mary O'Rourke (barrister), Irish barrister
* Mary O'Rourke (singer) (1913–1964), Scottish singer
* Mary O'Shaughnessy, American crime writer
* Mary O'Shiell (1715–after 1745), French-Irish privateer shipowner and slave trader
* Mary O'Toole (1874–1954), American first female U.S. municipal judge
* Mary P. Burrill (1881–1946), African-American playwright
* Mary P. Dolciani (1923–1985), American mathematician
* Mary P. Easley, American attorney, academic, and former university administrator
* Mary P. Hamlin (1871–1964), American playwright
* Mary P. Koss, American professor
* Mary Padian, American participant on Storage Wars
* Mary Paillon (1848–1946), French mountain climber and writer
* Mary Paischeff (1899–1975), Finnish ballerina
* Mary Pakington (1878–1949), English playwright
* Mary Paleologus (?–1674), English daughter of assassin Theodore Paleologus
* Mary Palmer (1716–1794), English author
* Mary Pannal (?–1603), English herbalist who was executed for witchcraft
* Mary Pannbacker (?–2015), American speech-language pathologist and university professor
* Mary Papazian (born 1959), American former university president
* Mary Paraskeva (1882–1951), Greek photographer
* Mary Parent (born 1968), American film producer and former studio executive
* Mary Parke (1908–1989), British marine botanist
* Mary Parkinson (born 1936), English former journalist and television presenter
* Mary Parminter (1767–1849), British designer
* Mary Parr (born 1961), Irish hurdler
* Mary Parry (1929–2017), English ice dancer
* Mary Partington (1889–1979), American schoolteacher and goat farmer
* Mary Patricia Plangman, birth name of Patricia Highsmith (1921–1995), American novelist and short story writer
* Mary Patten (born 1951), American artist and activist
* Mary Pattillo, American professor and ethnographer
* Mary Pawlenty (born 1961), American lawyer, judge, and public official
* Mary Paxton Keeley (1886–1986), American journalist
* Mary Pearcey (1866–1890), English woman who was executed for murder
* Mary Peck (born 1952), American photographer
* Mary Peckham (1839–1893), American author and reformer
* Mary Peisley (1718–1757), Irish Quaker writer
* Mary Pellatt (1857–1924), Canadian philanthropist
* Mary Pelloni, American television producer, director, and executive producer
* Mary Pendrill Llewelyn (1811–1874), Welsh poet and translator
* Mary Penfold (1820–1895), English businesswoman and winemaker
* Mary Penington (1623–1682), English Quaker writer and theologian
* Mary Penry (1735–1804), Welsh-born American diarist and accountant
* Mary Perkins (born 1944), English billionaire and businesswoman
* Mary Perkins (nurse) (1839–1893), American nurse during the American Civil War
* Mary Persico, American Roman Catholic nun and academic administrator
* Mary Perth (c. 1740–c. 1813), African American colonist and businesswoman
* Mary Pete (1957–2018), American educator and anthropologist
* Mary Peterson (midwife) (1927–2020), Alutiiq midwife and healer
* Mary Petherbridge (1870–1940), English indexer and writer
* Mary Petherick (1859–1946), British mountaineer and writer
* Mary Petrie (born 1951), Canadian former pair skater
* Mary Phagan (1899–1913), American murder victim
* Mary Phelps Jacob, birth name of Caresse Crosby (1892–1970), American fashion designer, businesswoman, socialite, writer, book publisher, artist, and pornographer
* Mary Philbrook (1872–1958), American attorney
* Mary Philipse (1730–1825), Anglo-Dutch colonial American heiress
* Mary Phillip (born 1977), English international footballer and football team manager
* Mary Pierce (born 1975), French former professional tennis player
* Mary Pike (1776–1832), Irish Quaker heiress
* Mary Pilkington (1761–1839), English novelist and poet
* Mary Pilling (born 1938), English former cricketer
* Mary Pillsbury Weston (1817–1895), American painter
* Mary Pilon (born 1986), American journalist and filmmaker
* Mary Ping (born 1978), American fashion designer
* Mary Pinwill (1871–1962), English professional woodcarver and businesswoman
* Mary Pirie (1822–1885), Scottish botanist and teacher
* Mary Pitcaithly, Scottish civil servant
* Mary Pitman Ailau (1838/1841–1905), American high chiefess of Hawaii
* Mary Pitt (1676–?), English courtier
* Mary Pittman, American chief executive
* Mary Pix (1666–1709), English novelist and playwright
* Mary Player (c. 1857–1924), New Zealand servant, midwife, welfare worker, feminist, and social reformer
* Mary Poafpybitty, birth name of Sanapia (1895–1984), Comanche medicine woman and spiritual healer
* Mary Pocock (1886–1977), South African phycologist
* Mary Pollard (1922–2005), English-born Irish librarian and literary scholar
* Mary Poovey, American cultural historian and literary critic
* Mary Portas (born 1960), English retail consultant and broadcaster
* Mary Porteous (1783–1861), English Primitive Methodist itinerant preacher
* Mary Post (1841–1934), American teacher and pioneer of education
* Mary Pownall (1862–1937), English sculptor
* Mary Poynton (1812–1891), New Zealand Roman Catholic
* Mary Prankster, American singer-songwriter
* Mary Newmarch Prescott (1849–1888), American author and poet
* Mary Prestidge (born 1948), English gymnast
* Mary Pride (born 1955), American author and magazine producer
* Mary Priestley (1925–2017), British music therapist
* Mary Prince (c. 1788–after 1833), British black writer and abolitionist
* Mary Prince (nanny) (born 1946), African American woman wrongly convicted of murder
* Mary Printz (1923–2009), American answering service operator
* Mary Prior (born 1942), British retired university officer
* Mary Proctor (1862–1957), Irish-American popularizer of astronomy
* Mary Proença (born 1935), Brazilian diver
* Mary Puckey (1898–1990), Australian medical doctor and hospital administrator
* Mary Pudlat (1923–2001), Canadian Inuk artist
* Mary Pugh, American mathematician
* Mary Pulling (1871–1951), English-born New Zealand headmistress, writer, and anchoress
* Mary Pünjer (1904–1942), German Jewish shop assistant who was murdered in the Holocaust
* Mary Q. Steele (1922–1992), American author and naturalist
* Mary Qayuaryuk (1908–1982), Inuk printmaker and midwife
* Mary Quade (born 1971), American writer of poetry and nonfiction
* Mary Quaile (1886–1958), Irish trade unionist
* Mary Quant (1930–2023), English fashion designer and icon
* Mary Quigley (1960–1977), American murder victim
* Mary Quin, American former businesswoman and kidnapping victim
* Mary Quintal (born 1929), Singaporean former badminton player and police officer
* Mary R. Calvert (1884–1974), American astronomical computer and astrophotographer
* Mary R. Denman (1823–1899), American temperance activist and social reform leader
* Mary R. Habeck (born 1963), American scholar of international relations
* Mary R. McKie, Canadian artist
* Mary R. P. Hatch (1848–1935), American author
* Mary R. T. McAboy (1815–1892), American poet
* Mary Racelis (born 1932), Filipino sociologist, anthropologist, and development worker
* Mary Rae (1880–1915), New Zealand nurse
* Mary Raftery (1957–2012), Irish investigative journalist, filmmaker, and writer
* Mary Railton (1906–1992), British Army officer
* Mary Rajamani (born 1943), Malaysian sprinter
* Mary Rakow, American novelist
* Mary Ralphson (?–1808), British Army personnel
* Mary Rambaran-Olm, Canadian specialist of early medieval England literature and history
* Mary Ramerman, American activist
* Mary Ramsden (born 1984), British painter
* Mary Rand (born 1940), English former track and field athlete
* Mary Randlett (1924–2019), American photographer
* Mary Randolph (1762–1828), Southern American cook and author
* Mary Rankin Swan (1865–1944), Irish portrait artist
* Mary Rawcliffe (1942–2023), American soprano
* Mary Rebecca Wadsworth, birth name of Rebecca Brandewyne (born 1955), American writer of romance novels
* Mary Reckford (born 1992), American rower
* Mary Redmond (1863–1930), Irish sculptor
* Mary Rees (born 1953), British mathematician and emeritus professor of mathematics
* Mary Reeser (1884–1951), American woman who mysteriously burned to death
* Mary Regan (born 1982), Irish journalist
* Mary Reibey (1777–1855), English-born Australian merchant, shipowner, and trader
* Mary Reidy (1880–1977), New Zealand civilian- and military nurse and community leader
* Mary Remington (1910–2003), English oil painter and artist
* Mary Remnant (1935–2020), English musician, scholar, musicologist, and medievalist
* Mary Renault (1905–1983), English novelist
* Mary Renfrew (born 1955), British professor of midwifery
* Mary Reveley (1940–2017), English racehorse trainer
* Mary Richmond (1861–1928), American social work pioneer
* Mary Richmond (teacher) (1853–1949), New Zealand community leader, teacher, and writer
* Mary Rickert (born 1959), American writer of fantasy fiction
* Mary Rickett (1861–1925), British mathematician
* Mary Riddell (born 1952), English journalist
* Mary Riddell (skier) (born 1980), American Paralympic alpine skier
* Mary Riddle (1902–1981), Native American airplane pilot
* Mary Rider (1876–?), American screenwriter, playwright, and short story writer
* Mary Ridge (1925–2000), British television director
* Mary Rini (1925–2019), American AAGPBL pitcher
* Mary Rippon (1850–1935), American professor
* Mary Roach (born 1959), American author and humorist
* Mary Robison (born 1949), American short story writer and novelist
* Mary Rockwell Hook (1877–1978), American architect and pioneer for women in architecture
* Mary Rodd, Lady Rennell (1901–1981), English landscape artist
* Mary Rodgers (1931–2014), American composer, screenwriter, and author
* Mary Roebling (1905–1994), American banker, businesswoman, and philanthropist
* Mary Rokonadravu, Fijian writer
* Mary Rollason (1764/1765–1835), British businesswoman
* Mary Rolleston (1845–1940), New Zealand homemaker, political hostess, and community leader
* Mary Rolls (1775–1835), English poet
* Mary Roman (1935–2020), American senior Olympics athlete and community leader
* Mary Romero (born 1952), American sociologist
* Mary Romero (boxer) (born 1985), Spanish professional boxer
* Mary Ronan, American educator
* Mary Ronnie (1926–2023), New Zealand librarian
* Mary Rood, 18th-century English silversmith
* Mary Roos (born 1949), German singer
* Mary Rosselli Nissim (1864–1937), Italian artist, composer, and pianist
* Mary Roszela Bellard, birth name of Rosie Ledet (born 1971), American Creole Zydeco accordion player and singer
* Mary Rotolo (1910–1990), American writer and political activist
* Mary Rountree (1922–2007), American AAGPBL player
* Mary Rouse (1926–1993), New Zealand cricketer
* Mary Rowe (born 1936), American professor
* Mary Rowell, American violinist
* Mary Rowlandson (c. 1637–1711), American woman whom Native Americans captured
* Mary Roy (1933–2022), Indian educator and women's rights activist
* Mary Royster (1875–1989), American supercentenarian
* Mary Ruddock (1895–1969), New Zealand clothes designer and businesswoman
* Mary Rudge (1842–1919), English chess master
* Mary Ruefle (born 1952), American poet, essayist, and professor
* Mary Ruggie (born 1945), American sociologist and professor
* Mary Rundle (1907–2010), English military personnel
* Mary Russ (born c. 1953), American retired jockey
* Mary Ruthsdotter (1944–2010), American feminist activist
* Mary Rutnam (1873–1962), Canadian doctor, gynaecologist, suffragist, and pioneer of women's rights
* Mary Ruwart (born 1949), American retired biomedical researcher, and speaker, writer, and activist
* Mary Danforth Ryle (1833–1904), American philanthropist
* Mary S. B. Shindler (1810–1883), American poet, writer, and editor
* Mary S. Caswell (1847–1924), American educator and writer
* Mary S. Cummins (1854–1894), American educator
* Mary S. Hartman (born 1941), American academic of gender studies
* Mary S. Lovell, British writer
* Mary S. Metz, American academic administrator
* Mary S. Peake (1823–1862), American teacher and humanitarian
* Mary S. Washburn (1868–1932), American sculptor
* Mary Sachs (1882–1973), American playwright and poet
* Mary Safford (1851–1927), American Unitarian minister
* Mary Sampson Patterson Leary Langston (c. 1835–1915), American abolitionist
* Mary Sandbach (1901–1990), British translator
* Mary Sandeman, real name of Aneka (born 1947), Scottish retired traditional singer
* Mary Sandoval, American mathematician and professor
* Mary Sands (1872–1949), American singer
* Mary Sansom (1935–2010), English operatic soprano
* Mary Sara (born 1986), Japanese fashion model and singer
* Mary Sarah (born 1995), American country music singer and songwriter
* Mary Saran (1897–1976), German-born English journalist and author
* Mary Sartain, American real estate manager, and contestant on Survivor (American TV series)
* Mary Sauer (born 1975), American pole vaulter
* Mary Saunders (born 1947), American retired U.S. Air Force personnel
* Mary Sawtelle (1835–1894), American medical doctor
* Mary Saxby (1738–1801), British vagrant
* Mary Saxer (born 1987), American track and field athlete
* Mary Say (1739/1740–1832), British printer and newspaper publisher
* Mary Scales (1928–2013), American professor, civic leader, and funeral home owner
* Mary Schapiro (born 1955), American lawyer and civil servant
* Mary Schaps (born 1948), Israeli-American mathematician, professor, and dean
* Mary Scharlieb (1845–1930), British pioneer physician and gynaecologist
* Mary Schendlinger (born 1948), Canadian writer and editor
* Mary Schenley (1826–1903), American philanthropist
* Mary Schepisi (born 1949), American artist
* Mary Schiavo, American aviation lawyer and whistleblower
* Mary Schleicher (1855–1949), Australian Anglican deaconess
* Mary Schmich (born 1953), American journalist
* Mary Schneider (born 1932), Australian singer and performer
* Mary Scotvold, American figure skating coach
* Mary Scranton (1918–2015), American consultant, community advocate, and academic trustee
* Mary Scullion (born 1950s), American Roman Catholic religious sister and activist
* Mary Seacole (1805–1881), English nurse, writer, and businesswoman
* Mary Seaton (born 1956), American former alpine skier
* Mary Selway (1936–2004), English casting director
* Mary Semans (1920–2012), American philanthropist
* Mary Seton (1542–1615), Scottish courtier, and later a nun
* Mary Settegast (1934–2020), American contemporary scholar and author
* Mary Sexton, Canadian film- and television producer
* Mary Sey (1952–2024), Gambian judge
* Mary Shaffer (born 1947), American artist
* Mary Shane (1945–1987), American MLB broadcaster
* Mary Shanley (1896–1989), American police officer and detective
* Mary Shannon (born 1944), English retired table tennis player
* Mary Shapard (c. 1882–c. 1950s), American author and peace activist
* Mary Sharp (1778–1812), British activist
* Mary Shawa, Malawian former public official
* Mary Sheepshanks (1872–1960), English pacifist, feminist, journalist, and social worker
* Mary Shelton (1510s–1570s), English poet and writer
* Mary Shepard (1909–2000), English illustrator of children's books
* Mary Sheridan (1899–1978), English paediatrician and public health officer
* Mary Sheriff (1950–2016), American art historian and professor
* Mary Sherlach (?–2012), American victim of the Sandy Hook Elementary School shooting
* Mary Sherwood (1856–1935), American physician, educator, and spokesperson
* Mary Shields (musher), American dog sledder
* Mary Shirville (1926–2020), English author and flower arranger
* Mary Short (1802–1849), Indian queen; wife of king Ghazi-ud-Din Haidar Shah
* Mary Shreve (Ames) Frothingham (1867–1955), American member of the Ames family
* Mary Shudi (?–1797), English harpsichord maker
* Mary Sia (1899–1971), Chinese-American teacher and cookbook author
* Mary Sibande (born 1982), South African artist
* Mary Sibbet Copley (1843–1929), American philanthropist and charity worker
* Mary Easton Sibley (1800–1878), American pioneer and educator
* Mary Siddon (fl. 1783), English thief
* Mary Siezgle, American Civil War nurse and soldier
* Mary Silber, American mathematician, physicist, and professor
* Mary Silberman (born 1997), Israeli wheelchair basketball player
* Mary Silliman (1736–1818), American matriarch in Revolutionary- and post-colonial Connecticut
* Mary Silvani (1948–1982), American murder victim
* Mary Simmons (?–c. 1687), English printer
* Mary Simon (born 1947), Canadian civil servant, diplomat, and former broadcaster
* Mary Sink, alternate name of Virginia Sink (1913–1986), American chemical engineer; first woman automotive engineer at Chrysler
* Mary Sinnott (born 1943), Irish former camogie- and badminton player
* Mary Size (1882/1883–1959), Irish penal reformer and officer
* Mary Skeaping (1902–1984), English ballerina, ballet teacher, director, choreographer, and producer
* Mary Skrenes, American comic book writer and screenwriter
* Mary Slessor (1848–1915), Scottish Presbyterian missionary to Nigeria
* Mary Annie Sloane (1867–1961), English artist
* Mary Smallwood (1919–2023), British historian and professor of Romano-Jewish history
* Mary Smart (1832–1849), the earliest known Sierra Leonean resident in Reading, England
* Mary Smieton (1902–2005), British civil servant
* Mary Smirke (1779–1853), English artist and translator
* Mary Snell-Hornby (born 1940), British-Austrian translator and scholar
* Mary Snow (1902–1978), British botanist
* Mary McCarty Snow (1928–2012), American composer, organist/pianist, and publisher
* Mary Snowden (born 1940), American painter and educator
* Mary Soames (1922–2014), English author
* Mary Soderstrom (born 1942), Canadian novelist and short story- and non-fiction writer
* Mary Sojourner (born 1940), American novelist, NPR commentator, columnist, and environmental- and social justice activist
* Mary Solari (1849–1929), Italian-American artist
* Mary Soronadi (born 1971), Nigerian handball player
* Mary Southcott (1862–1943), Canadian nurse, hospital administrator, and campaigner
* Mary Southin (born 1931), Canadian retired judge
* Mary Spackman, American physician
* Mary Spargo (1904–1991), American newspaper journalist and columnist
* Mary Spear (1913–2006), English cricketer
* Mary Speer (1925–2014), American southern gospel singer
* Mary Speir Gunn (1862–1913), Scottish murder victim
* Mary Speke (c. 1625–1697), English nonconformist patron and political activist
* Mary Spender (born 1990), British singer-songwriter, guitarist, and YouTube personality
* Mary Sperling, birth name of Dee Dee Phelps, American singer-songwriter and author
* Mary Sperry, American suffragist
* Mary Spilde (born 1951), Scottish retired educator
* Mary Spiller (1924–2019), English horticulturist and teacher
* Mary Spio, Ghanaian deep space engineer, tech innovator, and entrepreneur
* Mary Spiteri (born 1947), Maltese singer and television personality
* Mary Spry (1922–2002), English cricketer
* Mary Squibb, American mystery- and crime novelist
* Mary Stacey (born 1961), English judge, lawyer, and solicitor
* Mary Stachowicz (1951–2002), Polish American murder victim
* Mary Stainbank (1899–1996), South African sculptor
* Mary Stallard (born 1967), Welsh Anglican bishop
* Mary Stallcup (1954–1997), American lawyer
* Mary Stallings (born 1939), American jazz vocalist; mother of soul singer Adriana Evans
* Mary Stanisia (1878–1967), American Catholic nun, artist, and painter
* Mary Stanley (1813–1879), English Roman Catholic nun, philanthropist, and nurse
* Mary Stanton (born 1947), American author
* Mary Stapleton (1837–1918), British local historian
* Mary Stapleton-Bretherton (1809–1883), British landowner and businesswoman
* Mary Starrett, Canadian candidate in the 2006 Oregon gubernatorial election
* Mary Stauffer, American murder victim
* Mary Staunton, Irish musician and concertina- and accordion player
* Mary Steedman (1867–1921), English tennis player
* Mary Steen (1856–1939), Danish photographer and feminist
* Mary Steinhauser (1942–1975), Canadian social worker and prison classification officer
* Mary Haviland Stilwell Kuesel (1866–1936), American dentist
* Mary Stiner, American curator, academic, and professor of anthropology
* Mary Stirling, American labor unionist
* Mary Stockdale (1774–1854), English religious writer
* Mary Stocks, Baroness Stocks (1891–1975), English writer, economic historian, and suffragist
* Mary Stoddard (c. 1852–1901), Scottish-born Australian artist
* Mary Stoiana (born 2003), American tennis player
* Mary Stolz (1920–2006), American fiction writer
* Mary Stonehouse (1722–1751), British heiress
* Mary Stormont (1871–1962), English painter
* Mary Story, American medical researcher, professor, and science writer
* Mary Stott (1907–2002), English feminist and journalist
* Mary Strangman (1872–1943), Irish doctor, public health advocate, and women's suffragist
* Mary Strong (born 1973), American broadcast journalist, professional beach volleyball player, and master yoga instructor
* Mary Struthers (born 1950), American former professional tennis player
* Mary Sturge (1862–1925), English medical doctor and suffragist
* Mary Sturt (1896–1993), British educational psychologist and historian of education
* Mary Sudbury (1934–2018), Scottish engineer
* Mary Sully (1896–1963), Yankton Dakota avant-garde artist
* Mary Summer (1842–1902), French writer and historian
* Mary Sumner, 19th-century English silversmith
* Mary Sumner (1828–1921), English women's rights activist
* Mary Surratt (1820 or 1823–1865), American boarding house owner
* Mary Swainson (1908–2008), English pioneer of student counselling
* Mary Swan, Canadian novelist and short story writer
* Mary Swander (born 1950), American author
* Mary Swanzy (1882–1978), Irish landscape- and genre artist
* Mary Sweeny, 19th-century American criminal
* Mary Swope, real name of Topo Swope (born 1949), American actress and talent agent
* Mary Symon (1863–1938), Scottish poet
* Mary Symonds (1772–1854), English watercolour painter
* Mary Szybist (born 1970), American poet
* Mary T. Boatwright (born 1952), American professor emerita of classical studies and ancient history
* Mary T. Ficalora (born 1960), American author, educator, event coordinator, and television producer
* Mary T. Meagher (born 1964), American former competition swimmer, Olympic champion, and world record-holder
* Mary T. Reiley (1858–1878), American poet
* Mary T. Waggaman (1846–1931), American author of Catholic literature
* Mary T. Wales (1874–1952), American educator
* Mary Tabor (born 1946), American author of literary fiction, professor, radio show host, and columnist
* Mary Tadd (born 1936), English former javelin thrower
* Mary Taft (1772–1851), British Wesleyan Methodist preacher
* Mary TallMountain (1918–1994), American poet and storyteller
* Mary Tannahill (1863–1951), American painter, printmaker, embroiderer, and batik maker
* Mary Tanner (born 1938), British academic
* Mary Tape (1857–1934), American desegregation activist
* Mary Tassugat (1918–2016), Canadian Inuk artist
* Mary Tautari (?–1906), New Zealand Māori schoolteacher, interpreter, and postmaster
* Mary Tealby (1801–1865), English animal welfare campaigner
* Mary Teasdel (1863–1937), American impressionist artist
* Mary Teichman (born 1954), American artist and printmaker
* Mary Teissier (1917–1990), Ukrainian-French socialite, heiress, interior designer, and art collector
* Mary Telfair (1791–1875), American art collector and philanthropist
* Mary Tenney Castle (1819–1907), American missionary and philanthropist
* Mary Terán de Weiss (1918–1984), Argentine tennis player
* Mary Terrall (1952–2023), American academic and science historian
* Mary Thalassa Alford Cruso, birth name of Thalassa Cruso (1909–1997), English-born American presenter and author on horticulture
* Mary Theisen-Lappen (born 1990), American weightlifter
* Mary the Jewess, 3rd-century Jewish alchemist, scholar, writer, inventor, and occultist
* Mary Thimelby (1610–1690), English prioress
* Mary Thipe (1917–1982), South African anti-apartheid and human rights activist
* Mary Thom (1944–2013), American feminist, writer, and editor
* Mary Thomford Sellmer (1902–?), American game warden
* Mary Thornycroft (1809–1895), English sculptor
* Mary Threlfall (1910–1996), Australian nurse
* Mary Tiffen (1931–2020), British economic historian, scholar, and development professional
* Mary Tiles (born 1946), American philosopher and historian of mathematics and science
* Mary Tillinghast, British cook and writer
* Mary Tillotson, American broadcast journalist
* Mary Timms, Nigerian model and beauty pageant titleholder
* Mary Timney (?–1862), Scottish woman executed for murder
* Mary Timony (born 1970), American independent singer-songwriter, guitarist, keyboardist, bassist, and violist
* Mary Tindale (1920–2011), Australian botanist
* Mary Tinetti, American physician and professor
* Mary Tinney (1924–2006), Irish ambassador
* Mary Toft (c. 1701–1763), English medical hoaxer
* Mary Tombiri (born 1972), Nigerian retired track and field sprinter
* Mary Tomlinson, real name of Marjorie Main (1890–1975), American character actress
* Mary Tonkin (born 1973), Australian artist
* Mary Tooth (1778–1843), British Methodist preacher
* Mary Tortorich (1914–2017), American voice teacher
* Mary Totah (1957–2017), American Roman Catholic nun and non-fiction writer
* Mary Tourtel (1874–1948), British artist and writer
* Mary Towq Ghosh (born 1963), Lebanese translator and writer
* Mary Treadgold (1910–2005), English novelist, literary editor, and broadcaster producer
* Mary Treat (1830–1923), American naturalist, botanist, entomologist, and author
* Mary Tregear (1924–2010), British museum curator and art historian
* Mary Treglia (1897–1959), American social worker
* Mary Trevelyan (1897–1983), British warden of the Student Movement House
* Mary Trlica, American missing female
* Mary Troby, 19th-century English silversmith
* Mary Trye (1642–?), English writer and folk healer
* Mary Tsingou (born 1928), American physicist and mathematician
* Mary Tsiongas (born 1959), Greek-born American multi-disciplinary artist
* Mary Tsukamoto (1915–1998), Japanese American educator, cultural historian, and civil rights activist
* Mary Tuck (1928–1996), English criminologist, psychologist, and civil servant
* Mary Tuplin (1870–1887), Canadian murder victim
* Mary Turnbull (1927–2008), English historian and author
* Mary Turzillo (born 1940), American science fiction writer
* Mary Twining (1726–1804), English businesswoman
* Mary Two-Axe Earley (1911–1996), Canadian Mohawk- and Oneida women's rights activist
* Mary Tyrwhitt (1903–1997), British Army officer
* Mary U. Rothrock (1890–1976), American librarian and historian
* Mary Uduma (born 1952), Nigerian business executive
* Mary Underwood, Australian former international lawn bowls player
* Mary Unwin (1724–1796), British friend of English poet and Anglican hymnwriter William Cowper
* Mary Uprichard (born 1938), British nursing-, midwifery-, and health care activist
* Mary Upton Ferrin (1810–1881), American suffragette and women's rights advocate
* Mary V. Clymer (1861–1942), American nurse
* Mary V. Relling, American pharmacogeneticist
* Mary V. R. Thayer (1902–1983), American socialite, journalist, and author
* Mary V. Seeman (1935–2024), Canadian psychiatrist and professor
* Mary Valencia (born 2003), Colombian-born Chilean footballer
* Mary Valverde (born 1975), Latina-American artist
* Mary Van Blarcom (1913–1953), American artist
* Mary Vandervliet (1912–2004), Canadian sprinter
* Mary Van Ess, American curler
* Mary Vane-Tempest (c. 1858–1873), British daughter of George Vane-Tempest, 5th Marquess of Londonderry
* Mary van Kleeck (1883–1972), American social scientist and socialist
* Mary Van Rensselaer Buell (1893–1969), American chemist
* Mary Varnham (born 1946), New Zealand writer and publisher
* Mary Vaughan (born 1953), Irish archer
* Mary Vaux Walcott (1860–1940), American artist and naturalist
* Mary Vere (1581–1671), English letter writer
* Mary Verghese (1925–1986), Indian physician
* Mary Vetsera (1871–1889), Austrian noblewoman and mistress
* Mary Vieira (1927–2001), Brazilian sculptor
* Mary Vingoe, Canadian playwright and theatre director
* Mary von Schrader Jarrell (1914–2007), American patron of the arts and memoirist
* Mary von Stein, birth name of M. J. Hegar (born 1976), American U.S. Air Force veteran and former politician
* Mary Voytek, American microbiologist and astrobiologist
* Mary W. Bacheler (1860–1939), American physician and Baptist medical missionary in India
* Mary W. Chapin (1820–1889), American educator
* Mary W. M. Falconer (1867–1944), Scottish writer, poet, governess, and teacher
* Mary W.M. Hargreaves (1914–2008), American scholar of agricultural history
* Mary W. S. Wong, Singaporean lawyer
* Mary Wacera Ngugi (born 1988), Kenyan long-distance runner
* Mary Alsop King Waddington (1833–1923), American author
* Mary Wagaki (born 1954), Kenyan long-distance runner
* Mary Wagner (born 1949), American lawyer and retired judge
* Mary Wagner (Canada) (born 1974), Canadian anti-abortion advocate
* Mary Wakefield (born 1954), American nurse and health care administrator
* Mary Wakefield (journalist) (born 1975), British journalist
* Mary Walcott (1675–c. 1752), American girl called as a witness at the Salem witch trials
* Mary Waldron (born 1984), Irish association footballer and cricketer
* Mary Lily Walker (1863–1913), Scottish social reformer in Dundee
* Mary Walter (radio), American radio show host, political commentator, and voiceover artist
* Mary Walton, American inventor
* Mary Wambui, Kenyan businesswoman
* Mary Wandesford (1655–1726), Irish religious unmarried woman
* Mary Warburg (1908–2009), American philanthropist
* Mary Warburg (artist) (1866–1934), German painter and sculptor
* Mary Wardell (1832–1917), British philanthropist and hospital administrator
* Mary Warnock, Baroness Warnock (1924–2019), English philosopher of morality, education, and mind, and a writer on existentialism
* Mary Washburn (1907–1994), American athlete
* Mary Watt (1917–2005), New Zealand landscape architect and gardener
* Mary Way (1769–1833), American painter
* Mary Waya (born 1968), Malawian netball player and coach
* Mary Wayte (born 1965), American former competition swimmer, Olympic medalist, and television sports commentator
* Mary Weatherford (born 1963), American painter
* Mary Weddle (1934–2021), American AAGPBL player
* Mary Weiss (1948–2024), American singer and interior designer; member of girl group The Shangri-Las
* Lady Mary Wellesley (born 1986), British writer and historian
* Mary Wellstead (1850–1894), Australian scientist
* Mary Wemyss (1868–1951), English novelist
* Mary Wesley (1912–2002), English novelist
* Mary West (born 1945/1946), American entrepreneur and philanthropist
* Mary West, American murder victim
* Mary Westbrook (1829–1908), American author and poet
* Mary Westenholz (1857–1947), Danish Unitarian, women's rights activist, writer, and editor
* Mary Westmacott, pseudonym of Agatha Christie (1890–1976), English writer
* Mary Wharton (1912–1991), American botanist, author, and environmental activist
* Mary Wheatland (1835–1924), English swimming instructor, bathing machine keeper, and life-saver
* Mary Wheelhouse (c. 1868–c. 1947), English painter, illustrator, toymaker, and suffragette
* Mary Whelan, Irish diplomat
* Mary Whipple (born 1980), American coxswain
* Mary Whistler, alternate name of Ida Pollock (1908–2013), English novelist and painter
* Mary Whitebird, American author
* Mary Whitehouse (1910–2001), British teacher and conservative activist
* Mary Whitmer (1778–1856), German-born American Book of Mormon witness
* Mary Whitmore (1884–1974), English teacher, social activist, and mayor
* Mary Whitton, American computer scientist
* Mary Whyte (born 1953), American watercolor artist and author
* Mary Wibberley (c. 1934–2013), English romantic fiction writer
* Mary Wiggins (1904–1974), American composer, educator, organist, and pianist
* Mary Wigman (1886–1973), German dancer and choreographer
* Mary Wilburn (1932–2021), American lawyer and government official
* Mary Wilde, Baroness Penzance (1825–1900), English gardener
* Mary Wilkinson (academic) ((1909–2001), English scholar of German literature and culture
* Mary Willa Gummer, real name of Mamie Gummer (born 1983), American actress
* Mary Willingham, American woman who partook in the University of North Carolina academic-athletic scandal
* Mary Willumsen (1884–1961), Danish photographer
* Mary Wilshire (born 1953), American comics artist
* Mary Windeyer (1836–1912), English-born Australian women's rights campaigner, suffragist, philanthropist, and charity organizer
* Mary Wineberg (born 1980), American track and field athlete
* Mary Wings (born 1949), American cartoonist, writer, and artist
* Mary Winkler (born 1973), American woman convicted of voluntary manslaughter
* Mary Winningham, real name of Mare Winningham (born 1959), American actress and singer-songwriter
* Mary Winsor (1869–1956), American suffragist
* Mary Wirepa (1904–1971), New Zealand visual artist
* Mary Wise (born 1959), American college volleyball coach, former player, and author
* Mary Wittenberg (born 1962), American sports executive
* Mary Wixey (1921–2017), British track and field athlete
* Mary Woffington (1729–1811), Irish socialite
* Mary Opal Wolanin (1910–1997), American nurse and expert in eldercare
* Mary Wollstonecraft (1759–1797), English writer and founding feminist philosopher
* Mary Wolverston, 16th-century English pirate
* Mary Wondrausch (1923–2016), English artist, potter, historian, and writer
* Mary Woodall (1901–1988), British art historian, museum director, and Thomas Gainsborough scholar
* Mary Woody (1926–2010), American nurse, hospital administrator, and university professor
* Mary Chawner Woody (1846–1928), American Quaker minister, educator, and temperance leader
* Mary Woolley Gibbings Cotton, Viscountess Combermere (1799–1889), Irish author
* Mary Wootters, American coding theorist, information theorist, and theoretical computer scientist
* Mary Wroth (1587–1650s), English noblewoman and poet
* Mary Wu, Chinese classical pianist
* Mary Wurm (1860–1938), English pianist and composer
* Mary Wyatt (1789–1871), British botanist, phycologist, and retailer
* Mary Wyche (1858–1936), American nurse
* Mary Xaveria of the Angels, religious name of Catharine Burton (1668–1714), English nun and writer
* Mary Yamashiro Otani (1923–2005), American community activist
* Mary Yancey (1902–1992), American ceramic artist and designer
* Mary Yee (1897–1965), Native American linguist
* Mary Yost (1881–1954), American academic
* Mary Youngblood, American musician and performer of the Native American flute
* Mary Yu (born 1957), American lawyer and former Supreme Court justice
* Mary Yuriko Nakahara, birth name of Yuri Kochiyama (1921–2014), American civil rights activist
* Mary Zappone (born 1964), American businesswoman
* Mary Zicafoose, American textile artist, weaver, and teacher
* Mary Ziegler (born 1982), American legal historian
* Mary Zilba (born 1963), American singer and television personality
* Mary Zimmerman (born 1960), American theatre- and opera director and playwright
* Mary Zirin (1932–2019), American scholar and writer
* Mary Zophres, American costume designer

### Disambiguation pages

This section lists links to pages listing people of the same name.
* Mary Abbott (disambiguation)
* Mary Adams (disambiguation)
* Mary Ahern (disambiguation)
* Mary Aiken (disambiguation)
* Mary Alexander (disambiguation)
* Mary Alden (disambiguation)
* Mary Aldis (disambiguation)
* Mary Allen (disambiguation)
* Mary Allison (disambiguation)
* Mary Anderson (disambiguation)
* Mary Andrews (disambiguation)
* Mary Arden (disambiguation)
* Mary Armstrong (disambiguation)
* Mary Arnold (disambiguation)
* Mary Arundell (disambiguation)
* Mary Ashford (disambiguation)
* Mary Ashworth (disambiguation)
* Mary Atkinson (disambiguation)
* Mary Austin (disambiguation)
* Mary Avery (disambiguation)
* Mary Bailey (disambiguation)
* Mary Bain (disambiguation)
* Mary Baird (disambiguation)
* Mary Baker (disambiguation)
* Mary Baldwin (disambiguation)
* Mary Ball (disambiguation)
* Mary Banks (disambiguation)
* Mary Barber (disambiguation)
* Mary Barlow (disambiguation)
* Mary Barnes (disambiguation)
* Mary Barnett (disambiguation)
* Mary Barr (disambiguation)
* Mary Barrett (disambiguation)
* Mary Barry (disambiguation)
* Mary Bartlett (disambiguation)
* Mary Barton (disambiguation)
* Mary Bassett (disambiguation)
* Mary Beard (disambiguation)
* Mary Beaumont (disambiguation)
* Mary Bell (disambiguation)
* Mary Belle (disambiguation)
* Mary Bennett (disambiguation)
* Mary Benson (disambiguation)
* Mary Bentley (disambiguation)
* Mary Berger (disambiguation)
* Mary Bernard (disambiguation)
* Mary Berry (disambiguation)
* Mary Bethune (disambiguation)
* Mary Billings (disambiguation)
* Mary Bird (disambiguation)
* Mary Black (disambiguation)
* Mary Blackford (disambiguation)
* Mary Blair (disambiguation)
* Mary Blanchard (disambiguation)
* Mary Booth (disambiguation)
* Mary Bowers (disambiguation)
* Mary Bowie (disambiguation)
* Mary Boyce (disambiguation)
* Mary Boyd (disambiguation)
* Mary Boyle (disambiguation)
* Mary Bradford (disambiguation)
* Mary Bray (disambiguation)
* Mary Breckinridge (disambiguation)
* Mary Brooks (disambiguation)
* Mary Brown (disambiguation)
* Mary Bruce (disambiguation)
* Mary Bryan (disambiguation)
* Mary Bryant (disambiguation)
* Mary Buchanan (disambiguation)
* Mary Burke (disambiguation)
* Mary Burks (disambiguation)
* Mary Burnett (disambiguation)
* Mary Burns (disambiguation)
* Mary Burton (disambiguation)
* Mary Butler (disambiguation)
* Mary Butt (disambiguation)
* Mary Byrd (disambiguation)
* Mary Byrne (disambiguation)
* Mary Cabell (disambiguation)
* Mary Cahill (disambiguation)
* Mary Cain (disambiguation)
* Mary Caldwell (disambiguation)
* Mary Cameron (disambiguation)
* Mary Campbell (disambiguation)
* Mary Carey (disambiguation)
* Mary Carpenter (disambiguation)
* Mary Carroll (disambiguation)
* Mary Carter (disambiguation)
* Mary Casey (disambiguation)
* Mary Chan (disambiguation)
* Mary Charles (disambiguation)
* Mary Charlton (disambiguation)
* Mary Chase (disambiguation)
* Mary Childs (disambiguation)
* Mary Cholmondeley (disambiguation)
* Mary Christian (disambiguation)
* Mary Christie (disambiguation)
* Mary Clark (disambiguation)
* Mary Clarke (disambiguation)
* Mary Clay (disambiguation)
* Mary Cohen (disambiguation)
* Mary Coleman (disambiguation)
* Mary Collins (disambiguation)
* Mary Connor (disambiguation)
* Mary Conway (disambiguation)
* Mary Cook (disambiguation)
* Mary Cooke (disambiguation)
* Mary Cooper (disambiguation)
* Mary Copeland (disambiguation)
* Mary Costello (disambiguation)
* Mary Cotton (disambiguation)
* Mary Coughlan (disambiguation)
* Mary Craig (disambiguation)
* Mary Crane (disambiguation)
* Mary Crawford (disambiguation)
* Mary Cromwell (disambiguation)
* Mary Crowley (disambiguation)
* Mary Cunningham (disambiguation)
* Mary Curran (disambiguation)
* Mary Curtis (disambiguation)
* Mary Cutting (disambiguation)
* Mary Daly (disambiguation)
* Mary Darling (disambiguation)
* Mary Davidson (disambiguation)
* Mary Davies (disambiguation)
* Mary Davis (disambiguation)
* Mary Dawson (disambiguation)
* Mary Day (disambiguation)
* Mary Dickerson (disambiguation)
* Mary Dickinson (disambiguation)
* Mary Dickson (disambiguation)
* Mary Dillon (disambiguation)
* Mary Dixon (disambiguation)
* Mary Dodge (disambiguation)
* Mary Donaldson (disambiguation)
* Mary Douglas (disambiguation)
* Mary Doyle (disambiguation)
* Mary DuBois (disambiguation)
* Mary Dudley (disambiguation)
* Mary Duncan (disambiguation)
* Mary Dunlap (disambiguation)
* Mary Dunn (disambiguation)
* Mary Dunne (disambiguation)
* Mary Eastman (disambiguation)
* Mary Eaton (disambiguation)
* Mary Eddy (disambiguation)
* Mary Edgar (disambiguation)
* Mary Edmunds (disambiguation)
* Mary Edwards (disambiguation)
* Mary Ellis (disambiguation)
* Mary English (disambiguation)
* Mary Evans (disambiguation)
* Mary Fiennes (disambiguation)
* Mary Finlay (disambiguation)
* Mary Fisher (disambiguation)
* Mary Fitzgerald (disambiguation)
* Mary Flaherty (disambiguation)
* Mary Fletcher (disambiguation)
* Mary Flores (disambiguation)
* Mary Foley (disambiguation)
* Mary Foster (disambiguation)
* Mary Frampton (disambiguation)
* Mary Francis (disambiguation)
* Mary Fowler (disambiguation)
* Mary Fox (disambiguation)
* Mary Foy (disambiguation)
* Mary Fraser (disambiguation)
* Mary Freeman (disambiguation)
* Mary French (disambiguation)
* Mary Gabriel (disambiguation)
* Mary Galvin (disambiguation)
* Mary Gamewell (disambiguation)
* Mary Garcia (disambiguation)
* Mary Gardiner (disambiguation)
* Mary Garner (disambiguation)
* Mary Gay (disambiguation)
* Mary George (disambiguation)
* Mary Gibbs (disambiguation)
* Mary Gibson (disambiguation)
* Mary Gill (disambiguation)
* Mary Gleason (disambiguation)
* Mary Godolphin (disambiguation)
* Mary Godwin (disambiguation)
* Mary Gonzaga (disambiguation)
* Mary Good (disambiguation)
* Mary Gordon (disambiguation)
* Mary Graham (disambiguation)
* Mary Grant (disambiguation)
* Mary Gray (disambiguation)
* Mary Green (disambiguation)
* Mary Greene (disambiguation)
* Mary Gregory (disambiguation)
* Mary Grey (disambiguation)
* Mary Griffith (disambiguation)
* Mary Halford (disambiguation)
* Mary Hall (disambiguation)
* Mary Hamm (disambiguation)
* Mary Hansen (disambiguation)
* Mary Hardy (disambiguation)
* Mary Harper (disambiguation)
* Mary Harris (disambiguation)
* Mary Harrison (disambiguation)
* Mary Hart (disambiguation)
* Mary Harvey (disambiguation)
* Mary Haskell (disambiguation)
* Mary Hawkins (disambiguation)
* Mary Hay (disambiguation)
* Mary Hayward (disambiguation)
* Mary Healy (disambiguation)
* Mary Heath (disambiguation)
* Mary Heaton (disambiguation)
* Mary Heffernan (disambiguation)
* Mary Henderson (disambiguation)
* Mary Henry (disambiguation)
* Mary Hicks (disambiguation)
* Mary Hinton (disambiguation)
* Mary Hobbs (disambiguation)
* Mary Holland (disambiguation)
* Mary Holmes (disambiguation)
* Mary Hopkins (disambiguation)
* Mary Howe (disambiguation)
* Mary Hudson (disambiguation)
* Mary Hughes (disambiguation)
* Mary Hunt (disambiguation)
* Mary Hunter (disambiguation)
* Mary Hussey (disambiguation)
* Mary Hutchinson (disambiguation)
* Mary Hutton (disambiguation)
* Mary Irwin (disambiguation)
* Mary Jackson (disambiguation)
* Mary Jacobs (disambiguation)
* Mary James (disambiguation)
* Mary Jeffries (disambiguation)
* Mary Jenkins (disambiguation)
* Mary John (disambiguation)
* Mary Johnson (disambiguation)
* Mary Johnston (disambiguation)
* Mary Jones (disambiguation)
* Mary Jordan (disambiguation)
* Mary Joseph (disambiguation)
* Mary Karl (disambiguation)
* Mary Keane (disambiguation)
* Mary Keller (disambiguation)
* Mary Kelly (disambiguation)
* Mary Kennedy (disambiguation)
* Mary King (disambiguation)
* Mary Kirby (disambiguation)
* Mary Knight (disambiguation)
* Mary Lambert (disambiguation)
* Mary Lambie (disambiguation)
* Mary Lawlor (disambiguation)
* Mary Lawrence (disambiguation)
* Mary Lawson (disambiguation)
* Mary Leach (disambiguation)
* Mary Lee (disambiguation)
* Mary Leslie (disambiguation)
* Mary Lewis (disambiguation)
* Mary Lincoln (disambiguation)
* Mary Livingston (disambiguation)
* Mary Livingstone (disambiguation)
* Mary Lloyd (disambiguation)
* Mary Locke (disambiguation)
* Mary Lockwood (disambiguation)
* Mary Logan (disambiguation)
* Mary Long (disambiguation)
* Mary Lord (disambiguation)
* Mary Love (disambiguation)
* Mary Low (disambiguation)
* Mary Lowe (disambiguation)
* Mary Lyon (disambiguation)
* Mary MacDonald (disambiguation)
* Mary Mackay (disambiguation)
* Mary Maclean (disambiguation)
* Mary MacLeod (disambiguation)
* Mary Maher (disambiguation)
* Mary Mahoney (disambiguation)
* Mary Mann (disambiguation)
* Mary Manning (disambiguation)
* Mary Marsh (disambiguation)
* Mary Marshall (disambiguation)
* Mary Martin (disambiguation)
* Mary Matthews (disambiguation)
* Mary Maxwell (disambiguation)
* Mary May (disambiguation)
* Mary McCaffree (disambiguation)
* Mary McCall (disambiguation)
* Mary McCarthy (disambiguation)
* Mary McConnel (disambiguation)
* Mary McCracken (disambiguation)
* Mary McDonald (disambiguation)
* Mary McDowell (disambiguation)
* Mary McElroy (disambiguation)
* Mary McGee (disambiguation)
* Mary McIntyre (disambiguation)
* Mary McLaughlin (disambiguation)
* Mary McLendon (disambiguation)
* Mary McLeod (disambiguation)
* Mary McPhillips (disambiguation)
* Mary Mellish (disambiguation)
* Mary Mendum (disambiguation)
* Mary Meyer (disambiguation)
* Mary Miller (disambiguation)
* Mary Mills (disambiguation)
* Mary Mitchell (disambiguation)
* Mary Monroe (disambiguation)
* Mary Moody (disambiguation)
* Mary Moore (disambiguation)
* Mary Moran (disambiguation)
* Mary Morgan (disambiguation)
* Mary Morris (disambiguation)
* Mary Morrison (disambiguation)
* Mary Morrissey (disambiguation)
* Mary Morton (disambiguation)
* Mary Murphy (disambiguation)
* Mary Murray (disambiguation)
* Mary Nash (disambiguation)
* Mary Newman (disambiguation)
* Mary Nichols (disambiguation)
* Mary Nolan (disambiguation)
* Mary Norton (disambiguation)
* Mary Nutting (disambiguation)
* Mary O'Brien (disambiguation)
* Mary O'Connell (disambiguation)
* Mary O'Connor (disambiguation)
* Mary O'Hara (disambiguation)
* Mary O'Leary (disambiguation)
* Mary O'Malley (disambiguation)
* Mary O'Neal (disambiguation)
* Mary O'Neill (disambiguation)
* Mary O'Reilly (disambiguation)
* Mary O'Sullivan (disambiguation)
* Mary Oliver (disambiguation)
* Mary Ormsby (disambiguation)
* Mary Osborn (disambiguation)
* Mary Owen (disambiguation)
* Mary Owens (disambiguation)
* Mary Page (disambiguation)
* Mary Parker (disambiguation)
* Mary Parsons (disambiguation)
* Mary Patterson (disambiguation)
* Mary Pearson (disambiguation)
* Mary Pelham (disambiguation)
* Mary Perry (disambiguation)
* Mary Peters (disambiguation)
* Mary Petty (disambiguation)
* Mary Phillips (disambiguation)
* Mary Pickering (disambiguation)
* Mary Pickford (disambiguation)
* Mary Pope (disambiguation)
* Mary Porter (disambiguation)
* Mary Potter (disambiguation)
* Mary Powell (disambiguation)
* Mary Pratt (disambiguation)
* Mary Price (disambiguation)
* Mary Purcell (disambiguation)
* Mary Quinn (disambiguation)
* Mary Radcliffe (disambiguation)
* Mary Ramsey (disambiguation)
* Mary Rasmussen (disambiguation)
* Mary Ray (disambiguation)
* Mary Read (disambiguation)
* Mary Reed (disambiguation)
* Mary Reid (disambiguation)
* Mary Reilly (disambiguation)
* Mary Reynolds (disambiguation)
* Mary Rhodes (disambiguation)
* Mary Rice (disambiguation)
* Mary Richards (disambiguation)
* Mary Richardson (disambiguation)
* Mary Riley (disambiguation)
* Mary Ripley (disambiguation)
* Mary Robb (disambiguation)
* Mary Roberts (disambiguation)
* Mary Robinson (disambiguation)
* Mary Rogers (disambiguation)
* Mary Rose (disambiguation)
* Mary Ross (disambiguation)
* Mary Russell (disambiguation)
* Mary Ryan (disambiguation)
* Mary Salter (disambiguation)
* Mary Sanders (disambiguation)
* Mary Sawyer (disambiguation)
* Mary Scanlon (disambiguation)
* Mary Schweitzer (disambiguation)
* Mary Scott (disambiguation)
* Mary Sears (disambiguation)
* Mary Sewell (disambiguation)
* Mary Shakespear (disambiguation)
* Mary Sharpe (disambiguation)
* Mary Shaw (disambiguation)
* Mary Shelley (disambiguation)
* Mary Shepherd (disambiguation)
* Mary Sherman (disambiguation)
* Mary Simpson (disambiguation)
* Mary Sinclair (disambiguation)
* Mary Slattery (disambiguation)
* Mary Small (disambiguation)
* Mary Smith (disambiguation)
* Mary Snodgrass (disambiguation)
* Mary Somerville (disambiguation)
* Mary Spencer (disambiguation)
* Mary Spicer (disambiguation)
* Mary Stafford (disambiguation)
* Mary Stearns (disambiguation)
* Mary Stevens (disambiguation)
* Mary Stone (disambiguation)
* Mary Sullivan (disambiguation)
* Mary Susan (disambiguation)
* Mary Sutherland (disambiguation)
* Mary Sweeney (disambiguation)
* Mary Swift (disambiguation)
* Mary Talbot (disambiguation)
* Mary Tate (disambiguation)
* Mary Taylor (disambiguation)
* Mary Temple (disambiguation)
* Mary Teresa (disambiguation)
* Mary Theresa (disambiguation)
* Mary Therese (disambiguation)
* Mary Thomas (disambiguation)
* Mary Thompson (disambiguation)
* Mary Thomson (disambiguation)
* Mary Thorne (disambiguation)
* Mary Tobin (disambiguation)
* Mary Townley (disambiguation)
* Mary Townsend (disambiguation)
* Mary Tracy (disambiguation)
* Mary Travers (disambiguation)
* Mary Trump (disambiguation)
* Mary Tucker (disambiguation)
* Mary Turner (disambiguation)
* Mary Tyler (disambiguation)
* Mary Vernon (disambiguation)
* Mary Villiers (disambiguation)
* Mary Vincent (disambiguation)
* Mary Virginia (disambiguation)
* Mary Wade (disambiguation)
* Mary Walker (disambiguation)
* Mary Waller (disambiguation)
* Mary Walsh (disambiguation)
* Mary Walters (disambiguation)
* Mary Ward (disambiguation)
* Mary Ware (disambiguation)
* Mary Warren (disambiguation)
* Mary Washington (disambiguation)
* Mary Waters (disambiguation)
* Mary Watkins (disambiguation)
* Mary Watson (disambiguation)
* Mary Watts (disambiguation)
* Mary Webb (disambiguation)
* Mary Webster (disambiguation)
* Mary Weir (disambiguation)
* Mary Wells (disambiguation)
* Mary Whately (disambiguation)
* Mary Wheeler (disambiguation)
* Mary White (disambiguation)
* Mary Whitehead (disambiguation)
* Mary Whitney (disambiguation)
* Mary Wilcox (disambiguation)
* Mary Willard (disambiguation)
* Mary Williams (disambiguation)
* Mary Willis (disambiguation)
* Mary Willoughby (disambiguation)
* Mary Wills (disambiguation)
* Mary Willson (disambiguation)
* Mary Wilson (disambiguation)
* Mary Winchester (disambiguation)
* Mary Winslow (disambiguation)
* Mary Wiseman (disambiguation)
* Mary Wolf (disambiguation)
* Mary Wood (disambiguation)
* Mary Woods (disambiguation)
* Mary Worth (disambiguation)
* Mary Wright (disambiguation)
* Mary Yates (disambiguation)
* Mary Young (disambiguation)

## Fictional characters

* Mary Flynn, various characters
* Mary Tate, various characters
* Mary Worth, various characters
* Mary, in the 1917 British silent drama film Mary Girl, played by Jessie Winter
* Mary, in the 1923 American silent semi-autobiographical comedy film Mary of the Movies, played by Marion Mack
* Mary, in the 1969 British animated children's television series Mary, Mungo and Midge, voiced by Isabel Ryan
* Mary, in the 1974 American made-for-television drama film Can Ellen Be Saved
* Mary (Ma Li), in the 1992 Hong Kong film Mary from Beijing, played by Gong Li
* Mary, in the 2006 British science fiction television program Torchwood, played by Daniela Denby-Ashe
* Mary, in the 2017 Canadian drama film Mary Goes Round, played by Aya Cash
* Mary Aiken, in the 1977 US comedy film Andy Warhol's Bad, played by Susan Tyrrell
* Mary Albright, in the 1996 American sitcom 3rd Rock from the Sun, played by Jane Curtin
* Mary Alfyorov, in the 1926 Russian novel Mary
* Mary Andrews, Archie Andrews's mother in Archie Comics and Riverdale
* Mary Bailey, in the 1989 American animated sitcom The Simpsons, voiced by Maggie Roswell and Tress MacNeille
* Mary Bailey, in the 2006 American post-apocalyptic action drama television series Jericho, played by Clare Carey
* Mary Elizabeth Bartowski, in the 2007 American action comedy spy drama television series Chuck, played by Linda Hamilton
* Mary Bell, in the 1992 Japanese magical girl anime series Flower Witch Mary Bell, voiced by Chieko Honda
* Mary Bennet, in Jane Austen's Pride and Prejudice (1813)
* Mary Bishop, in the 1963 American television soap opera General Hospital, played by Catherine Wadkins
* Mary Bradburn, in the 1996 British crime drama television series Silent Witness, played by Diana Hardcastle
* Mary Burns, in the 1935 American drama film Mary Burns, Fugitive, played by Sylvia Sidney
* Mary Camden, in the 1996 American family drama television series 7th Heaven, played by Jessica Biel
* Mary Cherry, in the 1999 American teen comedy-drama television series Popular, played by Leslie Grossman
* Mary Connor, in the 1931 British thriller film 77 Park Lane, played by Betty Stockfeld
* Mary Cooper, Sheldon Cooper's mother in Young Sheldon
* Mary Corleone, in the 1990 American epic crime film The Godfather Part III, played by Sofia Coppola
* Mary Crane, in the 1921 short story The Voyage
* Mary Crane, in the 1959 American horror novel Psycho
* Mary Crawford, in the 1814 novel Mansfield Park
* Mary Darling, in Peter Pan
* Mary DeAngelis, in the 1999 American crime drama television series The Sopranos, played by Suzanne Shepherd
* Mary Daisy Dinkle, in the 2009 Australian adult stop-motion animated comedy-drama film Mary and Max, played by Toni Collette (as an adult) and Bethany Whitmore (in her youth)
* Mary Drake, in the 2010 American mystery teen drama television series Pretty Little Liars, played by Andrea Parker
* Mary Driscoll, in the 1922 Irish novel Ulysses
* Mary Flaherty, in the 2003 American sex comedy film American Wedding, played by Deborah Rush
* Mary Flaherty, in the 1985 British television soap opera EastEnders, played by Melanie Clark Pullen
* Mary Goodnight, in the 1974 American spy film The Man with the Golden Gun, played by Britt Ekland
* Mary Goskirk, in the 1972 British television soap opera Emmerdale, played by Louise Jameson
* Mary Gray, in the 1926 American silent comedy film The American Venus, played by Esther Ralston
* Mary Grayson, in DC Comics
* Mary Grey, in the 1939 American comedy film 5th Ave Girl, played by Ginger Rogers
* Mary Hamilton, in the 2019 American superhero television series Batwoman, played by Nicole Kang
* Mary Harkinson, in the 1985 British television soap opera EastEnders, played by Mary Woodvine
* Mary Hartman, in the 1976 American satirical soap opera Mary Hartman, Mary Hartman, played by Louise Lasser
* Mary Hatch Bailey, in the 1946 American Christmas supernatural drama film It's a Wonderful Life, played by Donna Reed (as an adult) and Jeanne Gale (as a child)
* Mary Hilton, in the 1956 British crime drama film Yield to the Night, played by Diana Dors
* Mary Howard, in the 1941 American romantic comedy film When Ladies Meet, played by Joan Crawford
* Mary Hurley Jenkins, in the 1985 American sitcom 227, played by Marla Gibbs
* Mary Jackson, in the 1960 British television soap opera Coronation Street, played by Barbara Ashcroft
* Mary Jackson, in Stephen King's novels The Regulators (1996) and Desperation (1996)
* Mary Jamison, in the 2014 American supernatural drama television series The Leftovers, played by Janel Moloney
* Mary Lamb, in the 2023 American Christmas comedy-drama film The Holdovers, played by Da'Vine Joy Randolph
* Mary Lennox, in the 1911 children's novel The Secret Garden
* Dr. Mary Lightly, in the 2006 American comedy-drama television series Psych, played by Jimmi Simpson
* Mary Loomis, in the 1983 American psychological slasher film Psycho II, played by Meg Tilly
* Mary MacPherran, in Marvel Comics
* Dr. Mary Malone, in Sir Philip Pullman's fantasy novel trilogies His Dark Materials (1995) and The Book of Dust (2017)
* Mary Maloney, in the 1954 short story Lamb to the Slaughter
* Mary Marvel, in DC Comics
* Mary Mathew, in the 1990 Indian Hindi-language action crime film Agneepath, played by Maadhavi
* Mary May, in the 1994 American comedy-drama film Andre, played by Andrea Libman
* Mary McGee, in the 1948 American drama film Speed to Spare, played by Jean Rogers
* Mary Melody, in the 1990 American animated television series Tiny Toon Adventures, voiced by Cindy McGee (in 1990) and Cree Summer (from 1990 to 1994)
* Mary Moreland, in the 1917 American silent drama film Mary Moreland, played by Marjorie Rambeau
* Mary Morstan, in Sir Arthur Conan Doyle's adaptations of Sherlock Holmes
* Mary Mouse, envisioned by British children's author Enid Blyton
* Mary Noble, in the 1935 American soap opera radio program Backstage Wife, played by Vivian Fridell (from 1935 to the early 1940s) and Claire Niesen (from 1945 to 1959)
* Mary O'Connor, in the 1920 American drama film The Prince of Avenue A, played by Cora Drew
* Mary O'Connor, in the 1996 British soap opera London Bridge, played by Simone Lahbib
* Mary Anastasia O'Connor, Maisie Ravier's alter ego in the Maisie film series
* Mary Parker, the mother of Spider-Man
* Mary Plain, an anthropomorphic bear in Welsh author Gwynedd Rae's children's novels
* Mary Poppins, in P. L. Travers's eponymous book series
* Mary Reid, in the 1982 British television soap opera Brookside, played by Carolyn Jordan
* Mary Richards, in the 1970 American television sitcom The Mary Tyler Moore Show, played by Mary Tyler Moore
* Mary Rose, in J.M. Barrie's play Mary Rose (1920)
* Mary Russell, in the Mary Russell & Sherlock Holmes mystery series
* Mary Ryan, in the 1949 American crime drama film Mary Ryan, Detective, played by Marsha Hunt
* Mary Sanderson, in the 1993 American fantasy comedy film Hocus Pocus, played by Kathy Najimy
* Mary Saotome, in the 2014 Japanese manga series Kakegurui, voiced by Minami Tanaka
* Mary Sawyer, in Mark Twain's The Adventures of Tom Sawyer
* Mary Shannon, in the 2008 American drama TV series In Plain Sight, played by Mary McCormack
* Mary Shaw, in the 2022 Canadian animated web series Mary and Flo On the Go!, voiced by Rebecca Liddiard
* Mary Shepherd-Sunderland, in the Japanese horror anthology media franchise Silent Hill, voiced by Monica Taylor Horgan
* Mary Shieler, in the 2009 American documentary film Talhotblond
* Mary Simpson, in the 1964 Italian comedy film Two Mafiamen in the Far West, played by Ana Casares
* Mary Simpson, in Eric Flint's 1632 book series (2000)
* Mary Smith, in the 1921 British silent drama film Mary-Find-the-Gold, played by Betty Balfour
* Mary Smith, in the 2017 Japanese animated fantasy film Mary and the Witch's Flower, voiced by Hana Sugisaki
* Mary Smythe, in the 1970 American television soap opera All My Children, played by Anna Stuart
* Mary Spuckler, in the 1989 American animated sitcom The Simpsons, voiced by Zooey Deschanel
* Mary Stubbs, in the 1960 British television soap opera Coronation Street, played by Joy Stewart
* Lady Mary Talbot, in the 2010 British historical drama television series Downton Abbey, played by Michelle Dockery
* Mary Taylor, in the 1960 British television soap opera Coronation Street, played by Patti Clare
* Mary Taylor, in the 1982 American science fiction film E.T., played by Dee Wallace
* Mary Thomas, in the 1993 American television sitcom Frasier, played by Kim Coles
* Mary Walker, the alter ego of Typhoid Mary (comics)
* Mary Walker, in the 2017 American television series Iron Fist, played by Alice Eve
* Mary Whitehead, in the 1969 American comedy film Angel in My Pocket, played by Lee Meriwether
* Mary Williams, in the 1973 American television soap opera The Young and the Restless, played by Carolyn Conwell
* Mary Williams, in the 1977 French film Another Man, Another Chance, played by Jennifer Warren
* Mary Winchester, in the 2005 American television drama series Supernatural, played by Samantha Smith
* Mary Wright, in the 2008 American fantasy horror drama television series True Blood, played by Valarie Pettiford