# List of baronetcies in the Baronetage of the United Kingdom: M

Peerages and baronetcies of Britain and Ireland :
| Extant | All |
| Dukes | Dukedoms |
| Marquesses | Marquessates |
| Earls | Earldoms |
| Viscounts | Viscountcies |
| Barons | Baronies |
| Baronets | Baronetcies |
| En, Ire, NS, GB, UK (extinct) ||
This is a list of baronetcies in the Baronetage of the United Kingdom. They have been created since 1801 when they replaced the baronetages in the Baronetage of Great Britain, and Baronetage of Ireland. This list is not currently complete.

## List of baronetcies in the Baronetage of the United Kingdom

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
| Title | Date of creation | Surname | Current status | Notes |
| Macalister of Tarbert | 1924 | Macalister | extinct 1934 | |
| Macara of Ardmore | 1911 | Macara | extant | |
| MacCormac of Harley Street | 1897 | MacCormac | extinct 1901 | |
| Macdonald of East Sheen | 1813 | Macdonald | extinct 1919 | |
| Macdonnell of Kilsharvan | 1872 | Macdonnell | extinct 1875 | |
| MacGregor of Ballimore | 1828 | MacGregor | extant | |
| Mackenzie of Glen Muick | 1890 | Mackenzie | dormant | fourth Baronet died 1993 - under review |
| Mackenzie of Kilcoy | 1836 | Mackenzie | extinct 1883 | |
| Mackeson of Hythe | 1954 | Mackeson | extant | |
| Mackie of Corraith | 1920 | Mackie | extinct 1924 | |
| Mackinnon of Strathaird and Loup | 1889 | Mackinnon | extinct 1893 | |
| Mackintosh of Halifax | 1935 | Mackintosh | extant | first Baronet created Viscount Mackintosh of Halifax in 1957 |
| Mackintosh of Mackintosh | 1812 | Mackintosh | extinct 1820 | |
| Mackworth-Praed of Owsden Hall | 1905 | Mackworth-Praed | extinct 1921 | |
| Maclay of Glasgow | 1914 | Maclay | extant | first Baronet created Baron Maclay in 1922 |
| Maclean of Strachur and Glensluain | 1957 | Maclean | extant | |
| Macleod of The Fairfields | 1925 | Macleod | extant | |
| Macleod of Fuinary | 1924 | Macleod | extant | |
| Maclure of Headbourne Worthy | 1898 | Maclure | extant | |
| Macmaster of Glengarry | 1921 | Macmaster | extinct 1922 | |
| Macnab of Dundurn Castle | 1858 | Macnab | extinct 1862 | |
| Macnaghten of Dundarave | 1836 | Workman-Macnaghten, Macnaghten | extant | |
| Macnaghten | 1836 | Macnaghten | extinct 1841 | |
| Macpherson-Grant of Ballindalloch and Invereshie | 1838 | Macpherson-Grant | extinct 1983 | |
| Macpherson of Banchor | 1933 | Macpherson | extant | first Baronet created Baron Strathcarron in 1936 |
| Macready of Cheltenham | 1923 | Macready | extant | |
| MacRobert of Douneside | 1922 | MacRobert | extinct 1941 | |
| Mactaggart of King's Park | 1938 | Mactaggart | extant | |
| Madden of Kells | 1919 | Madden | extant | Unproven |
| Madge of St Margaret's Bay | 1919 | Madge | extinct 1962 | |
| Magnay of Postford House | 1844 | Magnay | extinct 1960 | Lord Mayor of London |
| Magnus of Tangley Hill | 1917 | Magnus | extant | |
| Mahon of Castlegar | 1819 | Mahon | extant | |
| Mainwaring of Over Peover | 1804 | Mainwaring | extinct 1934 | |
| Maitland of Clifton Hall | 1818 | Maitland | dormant | tenth Baronet died 1994 |
| Makins of Rotherfield Court | 1903 | Makins | extinct 1999 | |
| Mallaby-Deeley of Mitcham Court | 1922 | Mallaby-Deeley | extinct 1962 | |
| Mallinson of Walthamstow | 1935 | Mallinson | extant | |
| Mander of The Mount | 1911 | Mander | extant | See Mander family |
| Mann of Thelveton Hall | 1905 | Mann | extant | |
| Manningham-Buller of Dilhorne Hall | 1866 | Manningham-Buller | extant | fourth Baronet created Viscount Dilhorne in 1964 |
| Maple of Childwick Bury | 1897 | Maple | extinct 1903 | |
| Mappin of Thornbury | 1886 | Mappin | extinct 1975 | |
| Marjoribanks of Guisachan | 1866 | Marjoribanks | extinct 1935 | first Baronet created Baron Tweedmouth in 1881 |
| Marjoribanks of Lees | 1815 | Marjoribanks | extinct 1888 | |
| Markham of Arusha | 1911 | Markham | extant | |
| Marling of Stanley Park | 1882 | Marling | extant | |
| Marr of Sunderland | 1919 | Marr | extant | |
| Marsden of Grimsby | 1924 | Marsden | extant | |
| Marsh of Dublin | 1839 | Marsh | extinct 1860 | |
| Martin of Cappagh | 1885 | Martin | extinct 1901 | |
| Martin of Overbury Court | 1905 | Martin | extinct 1916 | |
| Mason of Compton Pauncefoot | 1918 | Mason | extinct 1988 | first Baronet created Baron Blackford in 1935 |
| Matheson of Lochalsh | 1882 | Matheson | extant | |
| Matheson of the Lews and Achany | 1850 | Matheson | extinct 1878 | |
| Mathews of London | 1917 | Mathews | extinct 1920 | |
| Mathias of Vaendre Hall | 1917 | Mathias | extinct 1991 | |
| Constable-Maxwell-Scott of Abbotsford | 1932 | Constable-Maxwell-Scott | extinct 1954 | |
| Maxwell of Cardonoss | 1804 | Maxwell | extinct 1924 | |
| May of The Eyot | 1931 | May | extant | first Baronet created Baron May in 1935 |
| McAlpine of Knott Park | 1918 | McAlpine | extant | fifth Baronet had already been created a life peer as Baron McAlpine of Moffat in 1980, before succeeding to the Baronetcy in 1983; the life peerage became extinct on his death in 1990 |
| McClure of Belmont | 1874 | McClure | extinct 1893 | |
| McConnell of The Moat | 1900 | McConnell | extant | Lord Mayor of Belfast |
| McCowan of Dalwhat | 1934 | McCowan | dormant | second Baronet died 1965 |
| McCullagh of Lismarra | 1935 | McCullagh | extinct 1974 | |
| McEwen of Marchmont and Bardrochat | 1953 | McEwen | extant | |
| McFarland of Aberfoyle | 1914 | McFarland | extant | |
| McGrigor of Campden Hill | 1831 | McGrigor | extant | |
| McIver of Sarisbury | 1896 | McIver | extinct 1920 | |
| McKenny | 1831 | McKenny | extinct 1866 | |
| McLaren of Bodnant, Gwylgre and Hilders | 1902 | McLaren | extant | first Baronet created Baron Aberconway in 1911; baronetcy unproven (third Baronet died 2003) - under review |
| McLintock of Sanquhar | 1934 | McLintock | extant | |
| McMahon of Ashley Manor | 1817 | McMahon | extant | |
| McMahon of Dublin | 1815 | McMahon | extinct 1926 | |
| MacTaggart-Stewart of Southwick and Blairderry | 1892 | MacTaggart-Stewart | extinct 1948 | |
| McTaggart of Ardwell | 1841 | McTaggart | extinct 1867 | |
| Medlycott of Ven House | 1808 | Medlycott | extant | |
| Mellor of Culmhead | 1924 | Mellor | extinct 1990 | |
| Melvin of Olton | 1933 | Melvin | extinct 1952 | |
| Meredith of Montreal | 1916 | Meredith | extinct 1929 | |
| Metcalfe of Chilton | 1802 | Metcalfe | extinct 1979 | third Baronet created Baron Metcalfe in 1845, which title became extinct in 1846 |
| Methuen of Haslemere | 1916 | Methuen | extinct 1924 | |
| Meux of Theobald's Park | 1831 | Meux | extinct 1900 | |
| Meyer of Shortgrove | 1910 | Meyer | extant | |
| Meyrick of Bush | 1880 | Meyrick | extant | unproven (fourth Baronet died 2004) |
| Meysey-Thompson of Kirby Hall | 1874 | Meysey-Thompson | dormant | second Baronet created Baron Knaresborough in 1905, which title became extinct in 1920; third Baronet died 1967 |
| Micklethwait of Iridge Place | 1838 | Micklethwait | extinct 1853 | |
| Middlebrook of Oakwell | 1930 | Middlebrook | extinct 1971 | |
| Middlemore of Selly Oak | 1919 | Middlemore | extinct 1987 | |
| Middleton of Crowfield | 1804 | Middleton | extinct 1860 | |
| Milbank of Barningham Park | 1882 | Milbank | extant | |
| Milburn of Guyzance | 1905 | Milburn | extant | |
| Miles of Leigh Court | 1859 | Miles | extant | |
| Millais of Downgate | 1885 | Millais | extant | |
| Miller of Manderston | 1874 | Miller | extinct 1918 | |
| Mills of Alcester | 1953 | Mills | extant | first Baronet created Viscount Mills in 1962 |
| Mills of Ebbw Vale | 1921 | Mills | extant | |
| Mills of Hillingdon Court and Camelford House | 1868 | Mills | extinct 1982 | second Baronet created Baron Hillingdon in 1887 |
| Milne-Watson of Ashley | 1937 | Milne-Watson | extant | |
| Milne of Inveresk | 1876 | Milne | extinct 1938 | |
| Milnes of Gauley | 1801 | Milnes | extinct 1841 | |
| Mitchell-Thomson of Polmood | 1900 | Mitchell-Thomson | extant | Lord Provost of Edinburgh; second Baronet created Baron Selsdon in 1932 |
| Mitchell of Tulliallan | 1945 | Mitchell | extinct 1983 | |
| Mitchelson of Rotherfield | 1920 | Mitchelson | extinct 1945 | |
| Moir of Whitehanger | 1916 | Moir | extant | |
| Molony of Dublin | 1925 | Molony | dormant | second Baronet died in 1976 |
| Moncreiff of Tullibole | 1871 | Moncreiff | extant | first Baronet created Baron Moncreiff in 1874; in 1883 he also succeeded to the Moncreiff Baronetcy of Moncreiff, created in the Baronetage of Nova Scotia in 1685. Baronetcy unproven (5th baronet died 2002) - under review |
| Mond of Hartford Hill | 1910 | Mond | extant | first Baronet created Baron Melchett in 1928 |
| Monro of Bearcrofts | 1920 | Monro | extinct 1928 | |
| Monson of Thatched House Lodge | 1905 | Monson | extinct 1969 | |
| Montagu of Swaythling | 1894 | Montagu | extant | first Baronet created Baron Swaythling in 1907 |
| Montefiore of the Isle of Thanet | 1846 | Montefiore | extinct 1885 | |
| Montefiore of Worth Park | 1886 | Montefiore | extinct 1935 | |
| Montgomery of Stanhope | 1801 | Montgomery | extant | |
| Montgomery of The Hall | 1808 | Montgomery | extinct 1939 | |
| Moon of Copsewood Grange | 1887 | Moon | dormant | fourth Baronet died 1979 - under review |
| Moore of Colchester | 1923 | Moore | extinct 1992 | Lord Mayor of London |
| Moore of Hancox | 1919 | Moore | extant | President of the Royal College of Physicians |
| Moore of Kyleburn | 1956 | Moore | extinct 1971 | |
| Moore of Moore Lodge | 1932 | Moore | extant | |
| Morgan of Green Street and Lincoln's Inn | 1892 | Morgan | extinct 1897 | |
| Morgan of Whitehall Court | 1906 | Morgan | extinct 1916 | Lord Mayor of London |
| Morris of Cavendish Square | 1909 | Morris | extinct 1926 | |
| Morris of Clasemont | 1806 | Morris | dormant | ninth Baronet died 1982 |
| Morris of Spiddal | 1885 | Morris | extant | first Baronet created Baron Killanin in 1900 |
| Morris of Nuffield | 1929 | Morris | extinct 1963 | first Baronet created Viscount Nuffield in 1938 |
| Morrison-Bell of Harpford | 1923 | Morrison-Bell | extinct 1956 | |
| Morrison-Bell of Otterburn Hall | 1905 | Morrison-Bell | extant | |
| Mott of Ditchling | 1930 | Mott | extant | |
| Mount of Wasing | 1921 | Mount | extant | |
| Mountain of Oare Manor and Brendon | 1922 | Mountain | extant | |
| Mowat of Cleckheaton | 1932 | Mowat | extinct 1968 | |
| Mowbray of Mortimer | 1880 | Mowbray | extant | |
| Moynihan of Carr Manor | 1922 | Moynihan | extant | first Baronet created Baron Moynihan in 1929 |
| Muir-Mackenzie of Delvine | 1805 | Muir-Mackenzie | extant | |
| Muir of Deanston and Park Gardens | 1892 | Muir | dormant | Lord Provost of Glasgow; third Baronet died 1995 |
| Mulholland of Ballyscullion Park | 1945 | Mulholland | extant | second Baronet succeeded as Baron Dunleath in 1993 |
| Munro-Lucas-Tooth of Bught | 1920 | Munro-Lucas-Tooth, Lucas-Tooth | extant | |
| Munro of Libertis | 1825 | Munro | extant | |
| Muntz of Clifton-on-Dunsmore | 1902 | Muntz | extinct 1940 | |
| Murchison of Belgrave Square | 1866 | Murchison | extinct 1871 | |
| Murphy of Altadore | 1903 | Murphy | extinct 1922 | |
| Murphy of Wyckham | 1912 | Murphy | extinct 1963 | |
| Musgrave of Drumglass | 1897 | Musgrave | extinct 1904 | |
| Musgrove of Speldhurst and Russell Square | 1851 | Musgrove | extinct 1881 | Lord Mayor of London |
| Muspratt of Merseyside | 1922 | Muspratt | extinct 1934 | |
| Myers | 3 July 1804 | Myers | extinct 1811 | |
| Mynors of Treago | 1964 | Mynors | extant | |