# List of athletes from Maryland A – M

Maryland has a long history concerning sports and a number of major and minor professional sport figures have hailed from the state. Maryland enjoys considerable historical repute for the talented sports players of its past, including Cal Ripken Jr., Michael Phelps and Babe Ruth.
| Name | Sport | Professional Years | Hometown | Notes |
| A ||||||
| Rob Abiamiri | American Football | 2005–2007 | Randallstown | |
| Victor Abiamiri | American Football | 2007–2009 | Baltimore | |
| Nick Adenhart | Baseball | 2008–2009 | Silver Spring | |
| David Alexander | American Football | 1987–1994, 1996 | Silver Spring | |
| Yari Allnutt | Soccer | 1989–2004 | Baltimore | |
| Matt Alrich | Lacrosse | 2004–present | Baltimore | |
| Tom Amrhein | Soccer | 1934–1947 | Baltimore | * Inducted into the Maryland Soccer Hall of Fame in 1981 |
| Brady Anderson | Baseball | 1988–2002 | Silver Spring | |
| Harry Anderson | Baseball | 1957–1961 | North East | * Inducted into Delaware Sports Museum and Hall of Fame 1981 |
| Richie Anderson | American Football | 1993–2004 | Olney | |
| Tom Angley | Baseball | 1925 | Baltimore | |
| Sam Anno | American Football | 1987–1993 | Silver Spring | |
| Steve Armas | Soccer | 1999–2005 | Germantown | |
| Bob Armstrong | Baseball | 1871 | Baltimore | |
| Trace Armstrong | American Football | 1989–2003 | Bethesda | |
| Kyle Arrington | American Football | 2008–present | Accokeek | |
| Sonny Askew | Soccer | 1977–1989 | Baltimore | * Inducted into Maryland Soccer Hall of Fame 1994 |
| Ed Atkinson | Baseball | 1873 | Baltimore | |
| Tavon Austin | Football | 2013 | Baltimore | |
| Dick Aylward | Baseball | 1953 | Baltimore | |
| B ||||||
| Carlton Bailey | American Football | 1988–1997 | Baltimore | |
| Harold Baines | Baseball | 1980–2001 | Easton | * First Overall draft pick in 1977 Major League Baseball draft |
| John Baker | Baseball | 1908–1922 | Trappe | * Inducted into National Baseball Hall of Fame 1955 |
| Bob Baldwin | American Football | 1966 | Baltimore | |
| Harry Baldwin | Baseball | 1924–1925 | Baltimore | |
| John Bale | Baseball | 1999–present | Cheverly | |
| Jim Ball | Baseball | 1907–1908 | Harford County | |
| Chuck Banks | American Football | 1986–1987 | Baltimore | |
| Josh Banks | Baseball | 2007–present | Baltimore | |
| Ken Bannister | Basketball | 1984–1991 | Baltimore | |
| Steve Barber | Baseball | 1960–1974 | Takoma Park | |
| Brian Bark | Baseball | 1990–1995 | Baltimore | |
| Devin Barclay | Soccer | 2001–2005 | Annapolis | |
| Brooks Barnard | American Football | 2003 | | |
| Vic Barnhart | Baseball | 1944–1945 | Hagerstown | |
| Dave Batton | Basketball | 1982–1984 | Baltimore | |
| Lonny Baxter | Basketball | 2002–present | Silver Spring | |
| Johnny Beall | Baseball | 1913–1916, 1918 | Beltsville | |
| Betsy Beard | Rowing | 1984, 1988 | Baltimore | |
| Ted Beard | Baseball | 1948–1958 | Woodsboro | |
| Michael Beasley | Basketball | 2008–present | Frederick | |
| Ed Beatin | Baseball | 1887–1891 | Baltimore | |
| Desmond Beatty | Baseball | 1914 | Baltimore | |
| Kyle Beckerman | Soccer | 2000–present | Crofton | |
| Brian Bell | American Football | 2007 | Kettering | |
| Jacob Bender | American Football | 2007–present | Mayo | |
| Frank Bennett | Baseball | 1927–1928 | Mardela Springs | |
| Harry Benson | American Football | 1935 | | |
| Jack Bentley | Baseball | 1913–1926 | Silver Spring | |
| Boze Berger | Baseball | 1932–1939 | Baltimore | |
| Stephen Berger | Lacrosse | 2004–present | Jessup | |
| Mike Bielecki | Baseball | 1984–1997 | Baltimore | |
| Harry Biemiller | Baseball | 1920–1925 | Baltimore | |
| Norman Black | Basketball | 1980–1997 | Baltimore | |
| Leigh Bodden | American Football | 2003–present | Hyattsville | |
| Muggsy Bogues | Basketball | 1987–2001 | Baltimore | |
| Josh Boone | Basketball | 2006–present | Mount Airy | |
| Keith Booth | Basketball | 1997–1999 | Baltimore | |
| Dave Boswell | Baseball | 1964–1971 | Baltimore | |
| Beth Botsford | Swimming | 1996 | Baltimore | |
| Ken Boyd | Basketball | 1974–1975 | Frederick | |
| Charles Bradley | Basketball | 1981–1984 | Havre de Grace | |
| Dudley Bradley | Basketball | 1979–1989 | Baltimore | |
| Art Bragg | Track | 1952 | Baltimore | |
| Art Brandau | American Football | 1945–1946 | Baltimore | |
| Hezekiah Braxton | American Football | 1962–1963 | Baltimore | |
| Rod Breedlove | American Football | 1960–1967 | Cumberland | |
| Donald Brown | American Football | 1986–1987 | Annapolis | |
| Troy Brohawn | Baseball | 2001–2003 | Cambridge | |
| Jim Brown | Baseball | 1915–1916 | Laurel | |
| Roger Brown | American Football | 1990–1992 | Baltimore | |
| Stub Brown | Baseball | 1893–1897 | Baltimore | |
| Jeff Brubaker | Ice Hockey | 1974–1989 | Hagerstown | |
| Mark Budzinski | Baseball | 1995–2005 | Severna Park | |
| Scott Buete | Soccer | 2004–present | Bowie | |
| Damon Buford | Baseball | 1993–2001 | Baltimore | |
| Elise Burgin | Tennis | 1980–1993 | Baltimore | Inducted into the USTA Mid–Atlantic Tennis Hall of Fame 2003. |
| Leo Burke | Baseball | 1958–1965 | Hagerstown | |
| C. B. Burns | Baseball | 1902 | Bayview | |
| Evers Burns | Basketball | 1993–1998 | Baltimore | |
| Preston Burpo | Soccer | 1997–present | Bethesda | |
| Al Burris | Baseball | 1894 | Warwick | |
| Joe Buskey | Baseball | 1926 | Cumberland | |
| Bill Butler | Baseball | 1969–1977 | Hyattsville | |
| Tommy Byrne | Baseball | 1943–1953 | Baltimore | |
| C ||||||
| Nick Campofreda | American Football | 1944 | Baltimore | |
| Michael Campanaro | American Football | 2014–present | Clarksville | |
| Fred Carl | Baseball | 1899 | Baltimore | |
| Luke Carlin | Baseball | 2002–present | Silver Spring | |
| Keion Carpenter | American Football | 1999–2005 | Baltimore | |
| Ed Carroll | Baseball | 1929 | Baltimore | |
| James Carter | Track | 2000–2009 | Baltimore | |
| Louis Carter | American Football | 1975–1978 | Laurel | |
| Sam Cassell | Basketball | 1993–present | Baltimore | |
| Brett Cecil | Baseball | 2009– present | Dunkirk | |
| Giuliano Celenza | Soccer | 2000–present | Baltimore | |
| Florence Chambers | Swimming | 1924 | Baltimore | |
| Harry Chappas | Baseball | 1978–1980 | Mount Rainier | |
| Raymond Chester | American Football | 1970–1981, 1983 | Cambridge | * First Round Draft Pick in 1970 NFL draft. |
| Harry Child | Baseball | 1930 | Baltimore | |
| Cupid Childs | Baseball | 1888–1901 | Calvert County | |
| Earl Christy | American Football | 1966–1968 | Perryman | |
| Eugene Chung | American Football | 1992–1997 | Prince George's County | |
| Harry Clarke | American Football | 1940–1948 | Cumberland | |
| Sherm Clark | Rowing | 1920 | Baltimore | |
| Lefty Clarke | Baseball | 1921 | Clarksville | |
| Bill Clay | Baseball | 1902 | Baltimore | |
| Colin Cloherty | American Football | 2009 – present | Bethesda | |
| Ken Cloude | Baseball | 1994–2004 | Baltimore | |
| Andy Cohen | Baseball | 1926–1929 | Baltimore | |
| Syd Cohen | Baseball | 1934–1937 | Baltimore | |
| Dave Cole | Baseball | 1950–1955 | Williamsport | |
| Gordy Coleman | Baseball | 1959–1967 | Rockville | |
| Mike Collier | American Football | 1975–1979 | Baltimore | |
| Harry Colliflower | Baseball | 1899 | Petersville | |
| Andrew Combs | Lacrosse | 2003 – present | Towson | |
| Bill Conaty | American Football | 1997–2004 | Baltimore | |
| Kenny Cooper | Soccer | 2004 – present | Baltimore | |
| Brandon Copeland | American Football | 2013–present | Sykesville | |
| Jim Cox | American Football | 1968 | Baltimore | |
| Omar Cuff | American Football | 2008 – present | Landover | |
| Bill Currier | American Football | 1977–1985 | Glen Burnie | |
| D ||||||
| Quintin Dailey | Basketball | 1982–1992 | Baltimore | * First Round draft pick in 1982 NBA draft |
| Hugh Daily | Baseball | 1882–1887 | Baltimore | |
| Bill Dalrymple | Baseball | 1915 | Baltimore | |
| Doug Davis | American Football | 1966–1972 | Elkton | |
| Pierpont Davis | Sailing | 1932 | Baltimore | |
| Trench Davis | Baseball | 1980–1987 | Baltimore | |
| Dominique Dawes | Gymnastics | 1989–2000 | Silver Spring | * 1996 Olympic Gold Medalist |
| Jake Deane | Lacrosse | 2006 – present | Annapolis | |
| Don Dee | Basketball | 1968–1969 | Booneville | * 1968 Olympic Gold Medalist |
| Ben DeFelice | Lacrosse | 2007 – present | Towson | |
| Eddie Dent | Baseball | 1909–1912 | Baltimore | |
| Buttercup Dickerson | Baseball | 1878–1885 | Tyaskin | |
| Roy Dietzel | Baseball | 1954 | Baltimore | |
| Glenn Dishman | Baseball | 1993–2000 | Baltimore | |
| Juan Dixon | Basketball | 2002–2011 | Baltimore | * First Round Draft pick in 2002 NBA draft |
| Kyle Dixon | Lacrosse | 2006 – present | Annapolis | |
| Darnell Dockett | American Football | 2004 – present | Burtonsville | |
| Joe Dolan | Baseball | 1896–1901 | Baltimore | |
| John Dopson | Baseball | 1982–1994 | Baltimore | |
| Joey Dorsey | Basketball | 2008 – present | Baltimore | |
| John Dorsey | American Football | 1984–1988 | Leonardtown | |
| John Douglas | American Football | 1970–1973 | Columbia | |
| Terry Dozier | Basketball | 1989–2001 | Baltimore | |
| Mike Draper | Baseball | 1988–1994 | Hagerstown | |
| Tim Drummond | Baseball | 1983–1992 | La Plata | |
| Jacob Drengwitz | Ice Hockey | 2008 – Present | Silver Spring | * 2012 Led Laurel Beer League in PIM and Goals |
| Clyde Duncan | American Football | 1984–1985 | Oxon Hill | * First Round Draft Pick in 1984 NFL draft. |
| Matt Dyson | American Football | 1995 | La Plata | |
| E ||||||
| Bill Eagle | Baseball | 1898 | Rockville | |
| Charlie Eakle | Baseball | 1915 | | |
| Ed Edelen | Baseball | 1932 | Bryantown | |
| Corsley Edwards | Basketball | 2004–2005 | Baltimore | |
| Cal Ermer | Baseball | 1947 | Baltimore | |
| Benson Erwin | Lacrosse | 2005 – present | Baltimore | |
| Buck Etchison | Baseball | 1943–1944 | Baltimore | |
| Ferd Eunick | Baseball | 1917 | Baltimore | |
| Jake Evans | Baseball | 1878–1885 | Baltimore | |
| Leon Evans | American Football | 1985–1986 | Silver Spring | |
| F ||||||
| Harry Fanwell | Baseball | 1910 | Patapsco | |
| Steve Farr | Baseball | 1977–1994 | La Plata | |
| Duane Ferrell | Basketball | 1988–1999 | Baltimore | |
| Danny Ferry | Basketball | 1989–2003 | Baltimore | |
| Chick Fewster | Baseball | 1917–1927 | Baltimore | |
| William Fischer | Wrestling | 1956 | Baltimore | |
| John Fick | Baseball | 1944 | Baltimore | |
| Jack Fisher | Baseball | 1959–1969 | Frostburg | |
| Tom Flick | American Football | 1981–1987 | Patuxent River | |
| Charlie Fitzberger | Baseball | 1928 | Baltimore | |
| Jack Flater | Baseball | 1908 | Sandymount | |
| Jake Flowers | Baseball | 1923–1934 | Cambridge | |
| Gavin Floyd | Baseball | 2002 – present | Severna Park | |
| Darren Flutie | American Football | 1988–2002 | Manchester | * Inducted into the Canadian Football Hall of Fame 2007 |
| Doug Flutie | American Football | 1985–2005 | Manchester | * Inducted into the Canada's Sports Hall of Fame 2008 becoming the first non-Canadian inductee * Inducted into the College Football Hall of Fame 2007 * Inducted into the Canadian Football Hall of Fame 2008 |
| Kenneth Foote | Rowing | 1976 | Baltimore | |
| Spencer Ford | Lacrosse | 2001 – present | Towson | |
| Brownie Foreman | Baseball | 1895–1896 | Baltimore | |
| Chuck Foreman | American Football | 1973–1980 | Frederick | * First round draft pick in 1973 NFL draft |
| Frank Foreman | Baseball | 1884–1902 | Baltimore | |
| Dave Foutz | Baseball | 1884–1896 | Carroll County | |
| Frank Foutz | Baseball | 1901 | Baltimore | |
| Wayne Fowler | American Football | 1970 | Baltimore | |
| Jimmie Foxx | Baseball | 1925–1945 | Sudlersville | * 3 time AL MVP 1932,1933 and 1938 * Won AL Triple Crown 1933 * Inducted into National Baseball Hall of Fame 1951 |
| Hank Fraley | American Football | 2000 – present | Gaithersburg | |
| Steve Francis | Basketball | 1999–2007 | Takoma Park | * First Round Draft Pick in 1999 NBA draft * 2000 co-NBA Rookie of the Year |
| Brian Franco | American Football | 1987 | Annapolis | |
| Antonio Freeman | American Football | 1995–2003 | Baltimore | |
| John Friedberg | Fencing | 1992 | Baltimore | |
| Sam Frock | Baseball | 1907–1911 | Baltimore | |
| Jean Fugett | American Football | 1972–1979 | Baltimore | |
| Jim Fuller | Baseball | 1973–1978 | Bethesda | |
| Vincent Fuller | American Football | 2005 – present | Baltimore | |
| G ||||||
| Jim Gaffney | American Football | 1945–1946 | Cumberland | |
| Jared Gaither | American Football | 2007–2012 | White Plains | |
| Carwell Gardner | American Football | 1990–1997 | Baltimore | |
| Bill Gardner | Baseball | 1887 | Baltimore | |
| Daryl Gardener | American Football | 1996–2004 | Baltimore | * First Round Draft Pick in 1996 NFL draft. |
| Ray Gardner | Baseball | 1929–1930 | Frederick | |
| Basil Spalding de Garmendia | Tennis | 1990 | Baltimore | |
| Robert Garrett | Track | 1896, 1900 | Towson | * 1896 Shot Put Olympic Gold Medalist * 1896 Discus Olympic Gold Medalist |
| Terence Garvin | American Football | 2013–present | Baltimore | |
| Keith Gary | American Football | 1983–1988 | Bethesda | * First Round Draft Pick in 1981 NFL draft. |
| Tom Gatewood | American Football | 1972–1973 | Baltimore | |
| Mike Gaule | Baseball | 1889 | Baltimore | |
| Rudy Gay | Basketball | 2006 – present | Baltimore | * First Round Draft Pick in 2006 NBA draft. |
| Bob Gerhardt | Rowing | 1924 | Baltimore | |
| Rusty Gerhardt | Baseball | 1974–1983 | Baltimore | |
| Les German | Baseball | 1890–1897 | Baltimore | |
| Charlie Gettig | Baseball | 1896–1899 | Baltimore | |
| Tom Gettinger | Baseball | 1889–1895 | Frederick | |
| Bill Gilbert | Baseball | 1892 | Havre de Grace | |
| Dondre Gilliam | American Football | 2002–2003 | Baltimore | |
| Jim Gilmore | Baseball | 1875 | Baltimore | |
| James Gist | Basketball | 2008 – present | Silver Spring | |
| Wally Goldsmith | Baseball | 1871–1875 | Baltimore | |
| Jason Goode | American Football | 2008 – present | Baltimore | |
| Keith Gordon | Baseball | 1991–2000 | Bethesda | |
| Brian Gottfried | Tennis | 1973–1984 | Baltimore | * Inducted into the Intercollegiate Tennis Association's Intercollegiate Tennis Hall of Fame in 1990 * Inducted into the International Jewish Sports Hall of Fame in 1999 |
| Georgia Gould | Cycling | 2006 – present | Baltimore | |
| Ed Grain | American Football | 1947–1948 | Baltimore | |
| Lou Grasmick | Baseball | 1948 | Baltimore | |
| Devin Gray | Basketball | 1996–2000 | Baltimore | |
| Bill Green | Track | 1984 | Laurel | * Inducted into the Long Beach State Athletic Hall of Fame in 2001 |
| Jeff Green | Basketball | 2007 – present | Cheverly | * First Round Draft Pick in 2007 NBA draft. |
| Tony Greene | American Football | 1971–1979 | Clarksburg | |
| Robert Griffith | American Football | 1994–2006 | Lanham | |
| John Grimes | Baseball | 1897 | Woodstock | |
| Gabe Gross | Baseball | 2001 – present | Baltimore | * First Round Draft Pick in 2001 MLB draft. |
| Lefty Grove | Baseball | 1920–1941 | Lonaconing | * AL MVP 1931 * Inducted into National Baseball Hall of Fame 1947 |
| Bucky Guth | Baseball | 1969–1972 | Baltimore | |
| H ||||||
| Moose Haas | Baseball | 1974–1987 | Baltimore | |
| Joe Haden | American Football | 2010 – present | Fort Washington | |
| Alex Hall | American Football | 2008 – present | Glenarden | |
| Bob Hall | Baseball | 1904–1905 | Baltimore | |
| Irv Hall | Baseball | 1943–1946 | Alberton | |
| Jeff Halpern | Hockey | 1999 – present | Potomac | |
| Shane Halter | Baseball | 1991–2005 | La Plata | |
| Chris Haney | Baseball | 1990–2002 | Baltimore | |
| Tommy Hannan | Swimming | 2000 | Baltimore | * 2000 Olympic Gold Medalist |
| Louis Harant | Shooting | 1920 | Baltimore | * 1920 Olympic Gold Medalist |
| Kyle Harrison | Lacrosse | 2005 – present | Baltimore | |
| Kyle Hartzell | Lacrosse | 2008 – present | Dundalk | |
| Derrick Harvey | American Football | 2008 – present | Greenbelt | *First round Draft Pick in 2008 8th pick |
| Jeff Hatch | American Football | 2002–2005 | Annapolis | |
| Bill Hayes | Baseball | 1978–1987 | Cheverly | * First Round Draft Pick in 1978 MLB draft. |
| David Hayes | Soccer | 1999–2008 | Waldorf | |
| Pat Healey | Soccer | 2008 – present | Baltimore | |
| Vaughn Hebron | American Football | 1993–1998 | Baltimore | |
| Roy Heiser | Baseball | 1961 | Baltimore | |
| E.J. Henderson | American Football | 2002 – present | Aberdeen | |
| Erin Henderson | American Football | 2008 – present | Aberdeen | |
| Kevin Henderson | Basketball | 1986–1988 | Baltimore | |
| Dwayne Henry | Baseball | 1980–1996 | Elkton | |
| Walt Herrell | Baseball | 1911 | Baltimore | |
| Earl Hersh | Baseball | 1956 | Ebbvale | |
| Buck Herzog | Baseball | 1908–1920 | Baltimore | |
| Frederic Hewitt | Field Hockey | 1948 | Baltimore | |
| Darrius Heyward-Bey | American Football | 2009 – present | Silver Spring | First-round draft pick in the 2009 NFL draft |
| Cole Higgison | American Football | 1994 - 1995 | Walt Whitman | The University of Alabama |
| Ed High | Baseball | 1901 | Baltimore | |
| Calvin Hill | American Football | 1969–1981 | Baltimore | * First Round Draft Pick in 1969 NFL/AFL draft. |
| Charles Hill | American Football | 2002 – present | Palmer Park | |
| Sam Hinds | Baseball | 1977–1979 | Frederick | |
| Gene Hiser | Baseball | 1970–1975 | Baltimore | * First Round Draft Pick in 1970 MLB draft. |
| Bill Hohman | Baseball | 1927 | Brooklyn | |
| Bill Holbert | Baseball | 1876–1888 | Baltimore | |
| Michael Holston | American Football | 1981–1985 | Seat Pleasant | |
| Mike Hooper | Baseball | 1873 | Baltimore | |
| Jack Horner | Baseball | 1894 | Baltimore | |
| Hanson Horsey | Baseball | 1912 | Galena | |
| Bruce Howard | Baseball | 1963–1968 | Salisbury | |
| Tanya Hughes | Track | 1992 | Baltimore | |
| Tom Hull | American Football | 1974–1975 | Cumberland | |
| Kevin Huntley | Lacrosse | 2008 – present | Towson | 2008 MLL Rookie of the Year |
| I ||||||
| Erik Imler | Soccer | 1992–1999 | Silver Spring | |
| Steve Ingram | American Football | 1995–2000 | Cheverly | |
| J ||||||
| Jarrett Jack | Basketball | 2005 – present | Fort Washington | * First Round draft pick in 2005 NBA draft |
| David Jackson | American Football | 1987 | Baltimore | |
| Tanard Jackson | American Football | 2007 – present | Silver Spring | |
| Tracy Jackson | Basketball | 1981–1984 | Rockville | |
| Victor Jackson | American Football | 1986–1987 | Princess Anne | |
| Jon Jenkins | American Football | 1949–1950 | Frostburg | |
| Steve Jennings | Field Hockey | 1996 | Bethesda | |
| Tommy Johns | Baseball | 1873 | Baltimore | |
| Al Johnson | American Football | 1972–1978 | Baltimore | |
| Barry Johnson | American Football | 1991 | Baltimore | |
| Bryant Johnson | American Football | 2003 – present | Baltimore | * First Round Draft Pick in 2003 NFL draft. |
| Charles A. Johnson | American Football | 1979–1983 | Baltimore | |
| Dave Johnson | Baseball | 1982–1993 | Baltimore | |
| Judy Johnson | Baseball | 1918–1936 | Snow Hill | * Inducted into National Baseball Hall of Fame 1975 First athlete ever inducted into the Delaware Sports Museum and Hall of Fame 1976 |
| Larry Johnson | American Football | 2003 – present | La Plata | * First Round Draft Pick in 2003 NFL draft. |
| Brian Johnston | American Football | 1986–1987 | Highland | |
| Eric Jonassen | American Football | 1992–1997 | Baltimore | |
| Anthony Jones | American Football | 1984–1988 | Baltimore | |
| Bobby Jones | Baseball | 1967–1987 | Elkton | |
| Freddie Jones | American Football | 1997–2004 | Cheverly | |
| Marlon Jones | American Football | 1987–1991 | Baltimore | |
| Victor P. Jones | American Football | 1988–1994 | Rockville | |
| Brian Jordan | Baseball | 1988–2006 | Baltimore | * First Round Draft Pick in 1988 MLB draft. |
| LaMont Jordan | American Football | 2001 – present | Forestville | |
| Slats Jordan | Baseball | 1901–1902 | Baltimore | |
| Thomas Jordan | Basketball | 1992–1993 | Baltimore | |
| Brian Jozwiak | American Football | 1986–1988 | Catonsville | * First Round Draft Pick in 1986 NFL draft. |
| Zachary Jungers | Lacrosse | 2008 – present | Phoenix | |
| K ||||||
| Al Kaline | Baseball | 1953–1974 | Baltimore | * Inducted into National Baseball Hall of Fame 1980 |
| Dan Kallaugher | Lacrosse | 2007 – present | Baltimore | |
| N. D. Kalu | American Football | 1997–2008 | Baltimore | |
| Mark Karcher | Basketball | 2000 – present | Baltimore | |
| Vic Keen | Baseball | 1918–1927 | Bel Air | |
| George Keerl | Baseball | 1875 | Baltimore | |
| Jim Keesey | Baseball | 1925–1930 | Perryville | |
| Bill Keister | Baseball | 1896–1903 | Baltimore | |
| Charlie Keller | Baseball | 1939–1952 | Middletown | |
| Hal Keller | Baseball | 1949–1952 | Middletown | |
| Billy Kelly | Baseball | 1910–1913 | Baltimore | |
| Bryan Kelly | Baseball | 1981–1987 | Silver Spring | |
| Eric King | American Football | 2005 – present | Baltimore | |
| Vince Kinney | American Football | 1978–1979 | Baltimore | |
| Rudy Kneisch | Baseball | 1926 | Baltimore | |
| Mike Knode | Baseball | 1920 | Westminster | |
| Ray Knode | Baseball | 1923–1926 | Westminster | |
| Greg Koch | American Football | 1977–1987 | Bethesda | |
| Henry Kohler | Baseball | 1871–1874 | Baltimore | |
| Jeff Komlo | American Football | 1979–1983 | Cheverly | |
| Brian Kowitz | Baseball | 1988–1996 | Baltimore | |
| Nicholas Kropfelder | Soccer | 1942–1954 | Baltimore | * Inducted into National Soccer Hall of Fame 1996 |
| L ||||||
| Aaron Laffey | Baseball | 2003 – present | Cumberland | |
| Bill Lamar | Baseball | 1917–1927 | Rockville | |
| Sean Landeta | American Football | 1983–2006 | Baltimore | |
| Millard Lang | Soccer | 1934–1942 | Baltimore | * Inducted into the National Soccer Hall of Fame in 1950 * Inducted into the National Lacrosse Hall of Fame in 1978 * Inducted into the Maryland Soccer Hall of Fame in 1983 * Inducted into the Johns Hopkins Athletic Hall of Fame in 1995 |
| Lou Lassahn | American Football | 1938 | | |
| James Lauf | Cycling | 1952 | Baltimore | |
| Bill Leach | American Football | 1987 | Baltimore | |
| Kurk Lee | Basketball | 1990–2001 | Baltimore | |
| Jim Lehew | Baseball | 1958–1962 | Baltimore | |
| Dummy Leitner | Baseball | 1901–1902 | Parkton | |
| Reid Lennan | American Football | 1945–1947 | Baltimore | |
| Jack Lentz | American Football | 1967–1968 | Baltimore | |
| Walt Lerian | Baseball | 1928–1929 | Baltimore | |
| Jermaine Lewis | American Football | 1996–2004 | Lanham | |
| Mechelle Lewis | Track | 2008 | Oxon Hill | |
| Reggie Lewis | Basketball | 1987–1993 | Baltimore | * First Round Draft pick in 1987 NBA draft |
| Larry Linne | American Football | 1987 | Baltimore | |
| Phil Linz | Baseball | 1962–1968 | Baltimore | |
| Tom Lipp | Baseball | 1897 | Baltimore | |
| Ed Listopad | American Football | 1952 | Baltimore | |
| Jessica Long | Swimming | 2004–present | Baltimore | |
| Mike Lookingland | Soccer | 2005–present | Fallston | |
| Charlie Loudenslager | Baseball | 1904 | Baltimore | |
| Don Loun | Baseball | 1964 | Frederick | |
| Marty Lyons | American Football | 1979–1989 | Takoma Park | |
| John Lyston | Baseball | 1891–1894 | Baltimore | |
| M ||||||
| Bob Maddox | American Football | 1974–1976 | Frederick | |
| Nick Maddox | Baseball | 1907–1910 | Govanstown | |
| Charlie Maisel | Baseball | 1915 | Catonsville, Maryland | |
| Fritz Maisel | Baseball | 1913–1918 | Catonsville, Maryland | |
| George Maisel | Baseball | 1913–1922 | Catonsville, Maryland | |
| Ben Mallonee | Baseball | 1921 | Baltimore | |
| Lew Malone | Baseball | 1915–1919 | Baltimore | |
| Matt Maloney | Basketball | 1995–2003 | Silver Spring | |
| Mark Manges | American Football | 1978 | Cumberland | |
| Harry Marcoplos | Field Hockey | 1948, 1956 | Baltimore | |
| Dan Marohl | Lacrosse | 2002 – present | Annapolis | |
| Lindsey Mason | American Football | 1978–1983 | Baltimore | |
| Bobby Mathews | Baseball | 1871–1887 | Baltimore | |
| Jimmy Mathison | Baseball | 1902 | Baltimore | |
| Joe Matthews | Baseball | 1922 | Baltimore | |
| Steve Matthias | Baseball | 1884 | Mitchellville | |
| Earl Mattingly | Baseball | 1931 | Newport | |
| Justin Maxwell | Baseball | 2006 – present | Olney | |
| Aaron Maybin | American Football | 2009 – present | Ellicott City | First-round draft pick in the 2009 NFL draft. |
| Andrew Maynard | Boxer | 1988–2000 | Laurel | * 1988 Olympic Gold Medalist |
| Scott McBrien | American Football | 2004–2007 | Rockville | |
| Gene McCann | Baseball | 1901–1902 | | |
| Darnerien McCants | American Football | 1901–1902 | Baltimore | |
| Roger McCardell | Baseball | 1959 | Gorsuch Mills | |
| Jack McClinton | Basketball | 2004–present | Baltimore, Maryland | |
| Chris McCray | Basketball | 2006–2007 | Capitol Heights | |
| Ambrose McGann | Baseball | 1895 | Baltimore | |
| Ed McGlasson | American Football | 1979–1981 | Annapolis | |
| Tom McHale | American Football | 1987–1995 | Gaithersburg | |
| Randy McMillan | American Football | 1981–1986 | Havre de Grace | |
| Kimmie Meissner | Figure Skating | 2003 – present | Towson | |
| Jack Merson | Baseball | 1951–1953 | Elk Ridge | |
| Jim Mertens | American Football | 1969 | Cumberland | |
| Gil Meyer | American Football | 1947 | Baltimore | |
| Jake Miller | Baseball | 1922 | Baltimore | |
| Joe Miller | Baseball | 1884–1885 | Baltimore | |
| John Miller | Baseball | 1962–1967 | Baltimore | |
| Bob Millman | American Football | 1925–1927 | Cumberland | |
| Ed Mincher | Baseball | 1871–1872 | Baltimore | |
| Carlton Molesworth | Baseball | 1895 | Frederick | |
| Rodney Monroe | Basketball | 1991–1992 | Baltimore | |
| Tommy Mont | American Football | 1947–1949 | Mount Savage | |
| Mike Mooney | American Football | 1992–1993 | Baltimore | |
| Bob Moore | American Football | 1971–1978 | Baltimore | |
| Ray Moore | Baseball | 1952–1963 | Meadows | |
| Ray Morgan | Baseball | 1911–1918 | Baltimore | |
| Terence Morris | Basketball | 2001 – present | Frederick | |
| Frank Morrissey | Baseball | 1901–1902 | Baltimore | |
| Gordie Mueller | Baseball | 1950 | Baltimore | |
| Joe Muir | Baseball | 1951–1952 | Oriole | |
| Wayne Mulligan | American Football | 1969–1975 | Baltimore | |
| Brendan Mundorf | Lacrosse | 2007 – present | Ellicott City | |
| Jason Murphy | American Football | 2006 – present | Baltimore | |
| Bruce Murray | Soccer | 1984–1995 | Germantown | * Inducted into the Maryland Soccer Hall of Fame in 2005 |
| Bert Myers | Baseball | 1896–1900 | Frederick | |
| Chip Myrtle | American Football | 1967–1974 | Hyattsville | |
* Marcus Hatten (born 1980), basketball player, 2006 top scorer in the Israel Basketball Premier League
* Spencer Horwitz (born 1997), Major League Baseball first baseman for the Toronto Blue Jays