The following is a list of Major League Baseball players, retired or active as of the 2010 season.
| Name | Debut | Final game | Position | Teams | Ref |
|---|---|---|---|---|---|
| Duke Maas | April 21, 1955 | April 23, 1961 | Pitcher | Detroit Tigers, Kansas City Athletics, New York Yankees | [1] |
| Kevin Maas | June 29, 1990 | June 20, 1995 | Designated hitter | New York Yankees, Minnesota Twins | [2] |
| Bob Mabe | April 18, 1958 | May 5, 1960 | Pitcher | St. Louis Cardinals, Cincinnati Reds, Baltimore Orioles | [3] |
| Chris Mabeus | May 29, 2006 | May 29, 2006 | Pitcher | Milwaukee Brewers | [4] |
| John Mabry | April 23, 1994 | May 17, 2007 | Outfielder | St. Louis Cardinals, Seattle Mariners, San Diego Padres, Florida Marlins, Philadelphia Phillies, Oakland Athletics, Chicago Cubs, Colorado Rockies | [5] |
| Mac MacArthur | May 2, 1884 | June 9, 1884 | Pitcher | Indianapolis Hoosiers (AA) | [6] |
| Frank MacCormack | June 14, 1976 | May 3, 1977 | Pitcher | Detroit Tigers, Seattle Mariners | [7] |
| Bill Macdonald | May 6, 1950 | May 24, 1953 | Pitcher | Pittsburgh Pirates | [8] |
| Bob MacDonald | August 14, 1990 | June 7, 1996 | Pitcher | Toronto Blue Jays, Detroit Tigers, New York Yankees, New York Mets | [9] |
| Harvey MacDonald | June 12, 1928 | July 19, 1928 | Outfielder | Philadelphia Phillies | [10] |
| Mike MacDougal | September 22, 2001 | Pitcher | Kansas City Royals, Chicago White Sox, Washington Nationals, St. Louis Cardinals, Los Angeles Dodgers | [11] | |
| Harry Mace | May 5, 1891 | May 13, 1891 | Pitcher | Washington Statesmen | [12] |
| Macey, first name unknown | October 2, 1890 | October 2, 1890 | Catcher | Philadelphia Athletics (AA) | [13] |
| Mike Macfarlane | July 23, 1987 | October 3, 1999 | Catcher | Kansas City Royals, Boston Red Sox, Oakland Athletics | [14] |
| Danny MacFayden | August 25, 1926 | September 13, 1943 | Pitcher | Boston Red Sox, New York Yankees, Cincinnati Reds, Boston Bees/Braves, Pittsburgh Pirates, Washington Senators | [15] |
| Ed MacGamwell | April 14, 1905 | April 18, 1905 | First baseman | Brooklyn Superbas | [16] |
| Ken Macha | September 14, 1974 | September 30, 1981 | Third baseman | Pittsburgh Pirates, Montreal Expos, Toronto Blue Jays | [17] |
| Mike Macha | April 20, 1979 | May 26, 1980 | Third baseman | Atlanta Braves, Toronto Blue Jays | [18] |
| Alejandro Machado | September 2, 2005 | October 2, 2005 | Utility player | Boston Red Sox | [19] |
| Anderson Machado | September 27, 2003 | July 28, 2005 | Shortstop | Philadelphia Phillies, Cincinnati Reds, Colorado Rockies | [20] |
| Julio Machado | September 7, 1989 | October 6, 1991 | Pitcher | New York Mets, Milwaukee Brewers | [21] |
| Robert Machado | July 24, 1996 | September 18, 2004 | Catcher | Chicago White Sox, Montreal Expos, Seattle Mariners, Chicago Cubs, Milwaukee Brewers, Baltimore Orioles | [22] |
| Chuck Machemehl | April 6, 1971 | May 7, 1971 | Pitcher | Cleveland Indians | [23] |
| Dave Machemer | June 21, 1978 | July 2, 1979 | Second baseman | California Angels, Detroit Tigers | [24] |
| Drew Macias | September 29, 2007 | Outfielder | San Diego Padres | [25] | |
| José Macías | May 12, 1999 | October 2, 2005 | Utility player | Detroit Tigers, Montreal Expos, Chicago Cubs | [26] |
| Bill Mack | July 14, 1908 | July 21, 1908 | Pitcher | Chicago Cubs | [27] |
| Connie Mack β | September 11, 1886 | August 29, 1896 | Catcher | Washington Nationals (1886–1889), Buffalo Bisons (PL), Pittsburgh Pirates | [28] |
| Denny Mack | May 6, 1871 | September 27, 1883 | Utility player | Rockford Forest Citys, Philadelphia Athletics (1860–76), Philadelphia White Stockings, St. Louis Brown Stockings, Buffalo Bisons (NL), Louisville Eclipse, Pittsburgh Alleghenys | [29] |
| Earle Mack | October 5, 1910 | October 1, 1914 | Utility player | Philadelphia Athletics | [30] |
| Frank Mack | August 16, 1922 | June 15, 1925 | Pitcher | Chicago White Sox | [31] |
| Joe Mack | April 17, 1945 | July 4, 1945 | First baseman | Boston Braves | [32] |
| Quinn Mack | June 16, 1994 | June 21, 1994 | Outfielder | Seattle Mariners | [33] |
| Ray Mack | September 9, 1938 | September 28, 1947 | Second baseman | Cleveland Indians, New York Yankees, Chicago Cubs | [34] |
| Reddy Mack | September 16, 1885 | October 2, 1890 | Second baseman | Louisville Colonels, Baltimore Orioles (AA) | [35] |
| Shane Mack | May 25, 1987 | July 30, 1998 | Outfielder | San Diego Padres, Minnesota Twins, Boston Red Sox, Oakland Athletics, Kansas City Royals | [36] |
| Tony Mack | July 27, 1985 | July 27, 1985 | Pitcher | California Angels | [37] |
| Pete Mackanin | July 3, 1973 | October 3, 1981 | Second baseman | Texas Rangers, Montreal Expos, Philadelphia Phillies, Minnesota Twins | [38] |
| Eric Mackenzie | April 23, 1955 | April 23, 1955 | Catcher | Kansas City Athletics | [39] |
| Gordon Mackenzie | August 13, 1961 | September 16, 1961 | Catcher | Kansas City Athletics | [40] |
| Ken MacKenzie | May 2, 1960 | August 4, 1965 | Pitcher | Milwaukee Braves, New York Mets, St. Louis Cardinals, San Francisco Giants, Houston Astros | [41] |
| Felix Mackiewicz | September 7, 1941 | May 20, 1947 | Outfielder | Philadelphia Athletics, Cleveland Indians, Washington Senators | [42] |
| John Mackinson | April 16, 1953 | August 29, 1955 | Pitcher | Philadelphia Athletics, St. Louis Cardinals | [43] |
| Steve Macko | August 18, 1979 | August 6, 1980 | Second baseman | Chicago Cubs | [44] |
| Rob Mackowiak | May 19, 2001 | June 5, 2008 | Outfielder | Pittsburgh Pirates, Chicago White Sox, San Diego Padres, Washington Nationals | [45] |
| Evan MacLane | July 7, 2010 | Pitcher | St. Louis Cardinals | [46] | |
| Billy MacLeod | September 13, 1962 | September 22, 1962 | Pitcher | Boston Red Sox | [47] |
| Lonnie Maclin | September 7, 1993 | October 3, 1993 | Outfielder | St. Louis Cardinals | [48] |
| Max Macon | April 21, 1938 | April 17, 1947 | Utility player | St. Louis Cardinals, Brooklyn Dodgers, Boston Braves | [49] |
| Waddy MacPhee | September 27, 1922 | September 30, 1922 | Third baseman | New York Giants | [50] |
| Harry MacPherson | August 14, 1944 | August 14, 1944 | Pitcher | Boston Braves | [51] |
| Scott MacRae | July 24, 2001 | October 6, 2001 | Pitcher | Cincinnati Red | [52] |
| Matt Macri | May 24, 2008 | Third baseman | Minnesota Twins | [53] | |
| Jimmy Macullar | May 5, 1879 | October 14, 1886 | Shortstop | Syracuse Stars (NL), Cincinnati Red Stockings (AA), Baltimore Orioles (AA) | [54] |
| Keith MacWhorter | May 10, 1980 | October 5, 1980 | Pitcher | Boston Red Sox | [55] |
| Bunny Madden | June 3, 1909 | September 21, 1911 | Catcher | Boston Red Sox, Philadelphia Phillies | [56] |
| Frank Madden | July 4, 1914 | August 5, 1914 | Catcher | Pittsburgh Rebels | [57] |
| Gene Madden | April 20, 1916 | April 20, 1916 | Pinch hitter | Pittsburgh Pirates | [58] |
| Kid Madden | May 16, 1887 | October 6, 1891 | Pitcher | Boston Beaneaters, Boston Reds (1890–91), Baltimore Orioles (AA) | [59] |
| Len Madden | August 31, 1912 | September 19, 1912 | Pitcher | Chicago Cubs | [60] |
| Mike Madden | April 5, 1983 | June 11, 1986 | Pitcher | Houston Astros | [61] |
| Morris Madden | June 11, 1987 | June 23, 1989 | Pitcher | Detroit Tigers, Pittsburgh Pirates | [62] |
| Tommy Madden | September 10, 1906 | April 15, 1910 | Outfielder | Boston Beaneaters, New York Highlanders | [63] |
| Clarence Maddern | September 19, 1946 | September 25, 1951 | Outfielder | Chicago Cubs, Cleveland Indians | [64] |
| Elliott Maddox | April 7, 1970 | October 1, 1980 | Outfielder | Detroit Tigers, Washington Senators (1961–1971), Texas Rangers, New York Yankees, Baltimore Orioles, New York Mets | [65] |
| Garry Maddox | April 25, 1972 | April 20, 1986 | Outfielder | San Francisco Giants, Philadelphia Phillies | [66] |
| Jerry Maddox | June 3, 1978 | June 16, 1978 | Third baseman | Atlanta Braves | [67] |
| Nick Maddox | September 13, 1907 | September 12, 1910 | Pitcher | Pittsburgh Pirates | [68] |
| Greg Maddux | September 3, 1986 | September 27, 2008 | Pitcher | Chicago Cubs, Atlanta Braves, Los Angeles Dodgers, San Diego Padres | [69] |
| Mike Maddux | June 3, 1986 | July 4, 2000 | Pitcher | Philadelphia Phillies, San Diego Padres, Los Angeles Dodgers, New York Mets, Pittsburgh Pirates, Boston Red Sox, Seattle Mariners, Montreal Expos, Los Angeles Dodgers, Houston Astros | [70] |
| Tony Madigan | July 10, 1886 | September 4, 1886 | Pitcher | Washington Nationals (1886–1889) | [71] |
| Art Madison | September 9, 1895 | August 22, 1899 | Utility infielder | Philadelphia Phillies, Pittsburgh Pirates | [72] |
| Dave Madison | September 26, 1950 | August 20, 1953 | Pitcher | New York Yankees, St. Louis Browns, Detroit Tigers | [73] |
| Scotti Madison | July 6, 1985 | October 1, 1989 | Third baseman | Detroit Tigers, Kansas City Royals, Cincinnati Reds | [74] |
| Ed Madjeski | May 2, 1932 | October 3, 1937 | Catcher | Philadelphia Athletics, Chicago White Sox, New York Giants | [75] |
| Bill Madlock | September 7, 1973 | October 4, 1987 | Third baseman | Texas Rangers, Chicago Cubs, San Francisco Giants, Pittsburgh Pirates, Los Angeles Dodgers, Detroit Tigers | [76] |
| Alex Madrid | July 20, 1987 | May 30, 1989 | Pitcher | Milwaukee Brewers, Philadelphia Phillies | [77] |
| Sal Madrid | September 17, 1947 | September 28, 1947 | Shortstop | Chicago Cubs | [78] |
| Warner Madrigal | July 2, 2008 | Pitcher | Texas Rangers | [79] | |
| Bobby Madritsch | July 21, 2004 | April 6, 2005 | Pitcher | Seattle Mariners | [80] |
| Ryan Madson | September 27, 2003 | Pitcher | Philadelphia Phillies | [81] | |
| Calvin Maduro | September 8, 1996 | June 4, 2002 | Pitcher | Philadelphia Phillies, Baltimore Orioles | [82] |
| Héctor Maestri | September 24, 1960 | September 17, 1961 | Pitcher | Washington Senators, Washington Senators (1961–1971) | [83] |
| Dave Magadan | September 7, 1986 | September 26, 2001 | Utility infielder | New York Mets, Florida Marlins, Seattle Mariners, Houston Astros, Chicago Cubs, Oakland Athletics, San Diego Padres | [84] |
| Ever Magallanes | May 17, 1991 | May 22, 1991 | Shortstop | Cleveland Indians | [85] |
| Bill Magee | May 18, 1897 | June 7, 1902 | Pitcher | Louisville Colonels, Philadelphia Phillies, Washington Senators (NL), St. Louis Cardinals, New York Giants | [86] |
| Lee Magee | July 4, 1911 | September 28, 1919 | Outfielder | St. Louis Cardinals, Brooklyn Tip-Tops, New York Yankees, St. Louis Browns, Cincinnati Reds, Brooklyn Robins, Chicago Cubs | [87] |
| Sherry Magee | June 29, 1904 | September 27, 1919 | Outfielder | Philadelphia Phillies, Boston Braves, Cincinnati Reds | [88] |
| Wendell Magee | August 16, 1996 | September 1, 2002 | Outfielder | Philadelphia Phillies, Detroit Tigers | [89] |
| Harl Maggert (1910s OF) | September 4, 1907 | October 3, 1912 | Outfielder | Pittsburgh Pirates, Philadelphia Athletics | [90] |
| Harl Maggert (1930s OF) | April 19, 1938 | October 1, 1938 | Outfielder | Boston Bees | [91] |
| Sal Maglie | August 9, 1945 | August 31, 1958 | Pitcher | New York Giants, Cleveland Indians, Brooklyn Dodgers, New York Yankees, St. Louis Cardinals | [92] |
| Mike Magnante | April 22, 1991 | July 29, 2002 | Pitcher | Kansas City Royals, Houston Astros, Anaheim Angels, Oakland Athletics | [93] |
| John Magner | July 14, 1879 | July 14, 1879 | Outfielder | Cincinnati Reds (1876–1880) | [94] |
| Stubby Magner | July 12, 1911 | September 30, 1911 | Utility infielder | New York Highlanders | [95] |
| Jim Magnuson | June 28, 1970 | May 27, 1973 | Pitcher | Chicago White Sox, New York Yankees | [96] |
| Trystan Magnuson | May 17, 2011 | Pitcher | Oakland Athletics | [97] | |
| George Magoon | June 29, 1898 | September 28, 1903 | Shortstop | Brooklyn Bridegrooms, Baltimore Orioles (NL), Chicago Orphans, Cincinnati Reds, Chicago White Sox | [98] |
| Joe Magrane | April 25, 1987 | June 21, 1996 | Pitcher | St. Louis Cardinals, California Angels, Chicago White Sox | [99] |
| Tom Magrann | September 7, 1989 | October 1, 1989 | Catcher | Cleveland Indians | [100] |
| Pete Magrini | April 13, 1966 | May 9, 1966 | Pitcher | Boston Red Sox | [101] |
| Chris Magruder | September 4, 2001 | September 28, 2005 | Outfielder | Texas Rangers, Cleveland Indians, Milwaukee Brewers | [102] |
| Freddie Maguire | September 22, 1922 | September 27, 1931 | Second baseman | New York Giants, Chicago Cubs, Boston Braves | [103] |
| Jack Maguire | April 18, 1950 | September 9, 1951 | Outfielder | New York Giants, Pittsburgh Pirates, St. Louis Browns | [104] |
| Jim Mahady | October 2, 1921 | October 2, 1921 | Second baseman | New York Giants | [105] |
| Art Mahaffey | July 30, 1960 | July 17, 1966 | Pitcher | Philadelphia Phillies, St. Louis Cardinals | [106] |
| Lou Mahaffey | April 26, 1898 | April 26, 1898 | Pitcher | Louisville Colonels | [107] |
| Roy Mahaffey | August 31, 1926 | July 28, 1936 | Pitcher | Pittsburgh Pirates, Philadelphia Athletics, St. Louis Browns | [108] |
| Art Mahan | April 30, 1940 | September 29, 1940 | First baseman | Philadelphia Phillies | [109] |
| Frank Mahar | August 29, 1902 | August 29, 1902 | Outfielder | Philadelphia Phillies | [110] |
| Kevin Mahar | May 16, 2007 | Outfielder | Texas Rangers | [111] | |
| Billy Maharg | May 18, 1912 | October 5, 1916 | Utility player | Detroit Tigers, Philadelphia Phillies | [112] |
| Ron Mahay | May 21, 1995 | Pitcher | Boston Red Sox, Oakland Athletics, Florida Marlins, Chicago Cubs, Texas Rangers, Atlanta Braves, Kansas City Royals, Minnesota Twins | [113] | |
| Tom Maher | April 24, 1902 | April 26, 1902 | Pinch hitter | Philadelphia Phillies | [114] |
| Greg Mahlberg | September 24, 1978 | September 30, 1979 | Catcher | Texas Rangers | [115] |
| Mickey Mahler | September 13, 1977 | September 28, 1986 | Pitcher | Atlanta Braves, Pittsburgh Pirates, California Angels, Montreal Expos, Detroit Tigers, Texas Rangers, Toronto Blue Jays | [116] |
| Rick Mahler | April 20, 1979 | August 6, 1991 | Pitcher | Atlanta Braves, Cincinnati Reds, Montreal Expos | [117] |
| Paul Maholm | August 30, 2005 | Pitcher | Pittsburgh Pirates | [118] | |
| Pat Mahomes | April 12, 1992 | August 26, 2003 | Pitcher | Minnesota Twins, Boston Red Sox, New York Mets, Texas Rangers, Chicago Cubs, Pittsburgh Pirates | [119] |
| Al Mahon | April 22, 1930 | May 11, 1930 | Pitcher | Philadelphia Athletics | [120] |
| Bob Mahoney | May 3, 1951 | June 14, 1952 | Pitcher | Chicago White Sox, St. Louis Browns | [121] |
| Chris Mahoney | July 12, 1910 | October 8, 1910 | Pitcher | Boston Red Sox | [122] |
| Dan Mahoney | August 20, 1892 | July 30, 1895 | Catcher | Cincinnati Reds, Washington Senators (NL) | [123] |
| Danny Mahoney | May 15, 1911 | May 15, 1911 | Pinch runner | Cincinnati Reds | [124] |
| Jim Mahoney | July 28, 1959 | June 14, 1965 | Shortstop | Boston Red Sox, Washington Senators (1961–1971), Cleveland Indians, Houston Astros | [125] |
| Mike Mahoney (1B) | May 18, 1897 | April 17, 1898 | First baseman | Boston Beaneaters, St. Louis Browns (NL) | [126] |
| Mike Mahoney (C) | September 8, 2000 | September 24, 2005 | Catcher | Chicago Cubs, St. Louis Cardinals | [127] |
| Bob Maier | April 17, 1945 | September 20, 1945 | Third baseman | Detroit Tigers | [128] |
| Mitch Maier | September 23, 2006 | Outfielder | Kansas City Royals | [129] | |
| Emil Mailho | April 14, 1936 | June 4, 1936 | Outfielder | Philadelphia Athletics | [130] |
| Duster Mails | September 28, 1915 | April 29, 1926 | Pitcher | Brooklyn Robins, Cleveland Indians, St. Louis Cardinals | [131] |
| Alex Main | April 18, 1914 | June 29, 1918 | Pitcher | Detroit Tigers, Kansas City Packers, Philadelphia Phillies | [132] |
| Woody Main | April 21, 1948 | April 28, 1953 | Pitcher | Pittsburgh Pirates | [133] |
| John Maine | July 23, 2004 | Pitcher | Baltimore Orioles, New York Mets | [134] | |
| Scott Maine | August 27, 2010 | Pitcher | Chicago Cubs | [135] | |
| Jim Mains | August 22, 1943 | August 22, 1943 | Pitcher | Philadelphia Athletics | [136] |
| Willard Mains | August 3, 1888 | June 2, 1896 | Pitcher | Chicago White Stockings, Cincinnati Kelly's Killers, Milwaukee Brewers (AA), Boston Beaneaters | [137] |
| Oswaldo Mairena | September 5, 2000 | September 28, 2002 | Pitcher | Chicago Cubs, Florida Marlins | [138] |
| Charlie Maisel | October 2, 1915 | October 2, 1915 | Catcher | Baltimore Terrapins | [139] |
| Fritz Maisel | August 11, 1913 | August 28, 1918 | Third baseman | New York Yankees, St. Louis Browns | [140] |
| George Maisel | May 1, 1913 | September 30, 1922 | Outfielder | St. Louis Browns, Detroit Tigers, Chicago Cubs | [141] |
| Hank Majeski | May 17, 1939 | July 26, 1955 | Third baseman | Boston Bees/Braves, New York Yankees, Philadelphia Athletics, Chicago White Sox, Cleveland Indians, Baltimore Orioles | [142] |
| Gary Majewski | August 26, 2004 | Pitcher | Montreal Expos, Washington Nationals, Cincinnati Reds, Houston Astros | [143] | |
| Val Majewski | August 20, 2004 | September 8, 2004 | Outfielder | Baltimore Orioles | [144] |
| Frank Makosky | April 30, 1937 | September 30, 1937 | Pitcher | New York Yankees | [145] |
| Tom Makowski | May 1, 1975 | May 23, 1975 | Pitcher | Detroit Tigers | [146] |
| Mike Maksudian | September 2, 1992 | August 10, 1994 | First baseman | Toronto Blue Jays, Minnesota Twins, Chicago Cubs | [147] |
| Bill Malarkey | April 16, 1908 | August 16, 1908 | Pitcher | New York Giants | [148] |
| John Malarkey | September 21, 1894 | September 20, 1903 | Pitcher | Washington Senators (NL), Chicago Orphans, Boston Beaneaters | [149] |
| Mark Malaska | July 17, 2003 | July 24, 2004 | Pitcher | Tampa Bay Devil Rays, Boston Red Sox | [150] |
| José Malavé | May 23, 1996 | August 30, 1997 | Outfielder | Boston Red Sox | [151] |
| Charlie Malay | April 24, 1905 | October 7, 1905 | Second baseman | Brooklyn Superbas | [152] |
| Joe Malay | September 7, 1933 | April 19, 1935 | First baseman | New York Giants | [153] |
| Candy Maldonado | September 7, 1981 | September 29, 1995 | Outfielder | Los Angeles Dodgers, San Francisco Giants, Cleveland Indians, Milwaukee Brewers, Toronto Blue Jays, Chicago Cubs, Texas Rangers | [154] |
| Carlos Maldonado (P) | September 16, 1990 | October 3, 1993 | Pitcher | Kansas City Royals, Milwaukee Brewers | [155] |
| Carlos Maldonado (C) | September 8, 2006 | Catcher | Pittsburgh Pirates, Washington Nationals | [156] | |
| Martín Maldonado | September 3, 2011 | Catcher | Milwaukee Brewers | [157] | |
| Jim Maler | September 3, 1981 | July 24, 1983 | First baseman | Seattle Mariners | [158] |
| Tony Malinosky | April 26, 1937 | July 16, 1937 | Utility infielder | Brooklyn Dodgers | [159] |
| Cy Malis | August 17, 1934 | August 17, 1934 | Pitcher | Philadelphia Phillies | [160] |
| Bobby Malkmus | June 1, 1957 | May 15, 1962 | Second baseman | Milwaukee Braves, Washington Senators, Philadelphia Phillies | [161] |
| Jerry Mallett | September 19, 1959 | September 27, 1959 | Outfielder | Boston Red Sox | [162] |
| Brian Mallette | April 12, 2002 | May 23, 2002 | Pitcher | Milwaukee Brewers | [163] |
| Mal Mallette | September 25, 1950 | September 29, 1950 | Pitcher | Brooklyn Dodgers | [164] |
| Rob Mallicoat | September 11, 1987 | September 22, 1992 | Pitcher | Houston Astros | [165] |
| Les Mallon | April 14, 1931 | September 29, 1935 | Second baseman | Philadelphia Phillies, Boston Braves | [166] |
| Ben Mallonee | September 14, 1921 | September 23, 1921 | Outfielder | Philadelphia Athletics | [167] |
| Jule Mallonee | August 4, 1925 | August 23, 1925 | Outfielder | Chicago White Sox | [168] |
| Jim Mallory | September 8, 1940 | August 25, 1945 | Outfielder | Washington Senators, St. Louis Cardinals, New York Giants | [169] |
| Sheldon Mallory | April 10, 1977 | September 27, 1977 | Outfielder | Oakland Athletics | [170] |
| Alex Malloy | September 10, 1910 | October 9, 1910 | Pitcher | St. Louis Browns | [171] |
| Bob Malloy (1940s P) | May 4, 1943 | May 6, 1949 | Pitcher | Cincinnati Reds, St. Louis Browns | [172] |
| Bob Malloy (1980s P) | May 26, 1987 | June 8, 1990 | Pitcher | Texas Rangers, Montreal Expos | [173] |
| Herm Malloy | October 6, 1907 | June 1, 1908 | Pitcher | Detroit Tigers | [174] |
| Marty Malloy | September 6, 1998 | June 7, 2002 | Second baseman | Atlanta Braves, Florida Marlins | [175] |
| Harry Malmberg | April 12, 1955 | September 11, 1955 | Second baseman | Detroit Tigers | [176] |
| Chuck Malone | September 6, 1990 | October 3, 1990 | Pitcher | Philadelphia Phillies | [177] |
| Eddie Malone | July 17, 1949 | June 25, 1950 | Catcher | Chicago White Sox | [178] |
| Fergy Malone | May 20, 1871 | April 17, 1884 | Catcher | Philadelphia Athletics (1860–76), Philadelphia White Stockings, Chicago White Stockings, Philadelphia Keystones | [179] |
| Lew Malone | May 31, 1915 | September 27, 1919 | Utility infielder | Philadelphia Athletics, Brooklyn Robins | [180] |
| Martin Malone | June 20, 1872 | September 13, 1872 | Pitcher | Eckford of Brooklyn | [181] |
| Pat Malone | April 12, 1928 | September 28, 1937 | Pitcher | Chicago Cubs, New York Yankees | [182] |
| Billy Maloney | May 2, 1901 | October 6, 1908 | Outfielder | Milwaukee Brewers (1901), St. Louis Browns, Cincinnati Reds, Chicago Cubs, Brooklyn Superbas | [183] |
| Charlie Maloney | August 10, 1908 | August 10, 1908 | Pitcher | Boston Doves | [184] |
| Jim Maloney | July 27, 1960 | September 21, 1971 | Pitcher | Cincinnati Reds, California Angels | [185] |
| John Maloney | September 15, 1876 | August 28, 1877 | Outfielder | New York Mutuals, Hartford Dark Blues | [186] |
| Matt Maloney | June 6, 2009 | Pitcherer | Cincinnati Reds | [187] | |
| Pat Maloney | June 19, 1912 | August 5, 1912 | Outfielder | New York Highlanders | [188] |
| Sean Maloney | April 28, 1997 | September 26, 1998 | Pitcher | Milwaukee Brewers, Los Angeles Dodgers | [189] |
| Paul Maloy | July 11, 1913 | July 22, 1913 | Pitcher | Boston Red Sox | [190] |
| Gordon Maltzberger | April 27, 1943 | September 17, 1947 | Pitcher | Chicago White Sox | [191] |
| Frank Malzone | September 17, 1955 | October 1, 1966 | Third baseman | Boston Red Sox, California Angels | [192] |
| Al Mamaux | September 23, 1913 | September 2, 1924 | Pitcher | Pittsburgh Pirates, Brooklyn Robins, New York Yankees | [193] |
| Frank Mancuso | April 18, 1944 | September 26, 1947 | Catcher | St. Louis Browns, Washington Senators | [194] |
| Gus Mancuso | April 30, 1928 | September 11, 1945 | Catcher | St. Louis Cardinals, New York Giants, Chicago Cubs, Brooklyn Dodgers, Philadelphia Phillies | [195] |
| Carl Manda | September 11, 1914 | September 22, 1914 | Second baseman | Chicago White Sox | [196] |
| Hal Manders | August 12, 1941 | September 24, 1946 | Pitcher | Detroit Tigers, Chicago Cubs | [197] |
| Vincent Maney | May 18, 1912 | May 18, 1912 | Shortstop | Detroit Tigers | [198] |
| Jim Mangan | April 16, 1952 | August 2, 1956 | Catcher | Pittsburgh Pirates, New York Giants | [199] |
| Matt Mangini | September 23, 2010 | Third baseman | Seattle Mariners | [200] | |
| Ángel Mangual | September 15, 1969 | June 20, 1976 | Outfielder | Pittsburgh Pirates, Oakland Athletics | [201] |
| Pepe Mangual | September 6, 1972 | October 2, 1977 | Outfielder | Montreal Expos, New York Mets | [202] |
| Leo Mangum | July 11, 1924 | May 11, 1935 | Pitcher | Chicago White Sox, New York Giants, Boston Braves | [203] |
| George Mangus | August 20, 1912 | September 20, 1912 | Outfielder | Philadelphia Phillies | [204] |
| Clyde Manion | May 5, 1920 | September 30, 1934 | Catcher | Detroit Tigers, St. Louis Browns, Cincinnati Reds | [205] |
| Phil Mankowski | August 30, 1976 | July 21, 1982 | Third baseman | Detroit Tigers, New York Mets | [206] |
| Charlie Manlove | May 31, 1884 | June 17, 1884 | Catcher | Altoona Mountain City, New York Gothams | [207] |
| Fred Mann | May 1, 1882 | October 10, 1887 | Outfielder | Worcester Ruby Legs, Philadelphia Athletics (AA), Columbus Buckeyes, Pittsburgh Alleghenys, Cleveland Blues | [208] |
| Garth Mann | May 14, 1944 | May 14, 1944 | Pinch runner | Chicago Cubs | [209] |
| Jim Mann | May 29, 2000 | August 1, 2003 | Pitcher | New York Mets, Houston Astros, Pittsburgh Pirates | [210] |
| Johnny Mann | April 18, 1928 | May 23, 1928 | Third baseman | Chicago White Sox | [211] |
| Kelly Mann | September 4, 1989 | October 3, 1990 | Catcher | Atlanta Braves | [212] |
| Les Mann | April 30, 1913 | September 30, 1928 | Outfielder | Boston Braves, Chicago Whales, Chicago Cubs, St. Louis Cardinals, Cincinnati Reds, New York Giants | [213] |
| Charlie Manning | May 24, 2008 | Pitcher | Washington Nationals | [214] | |
| David Manning | August 2, 2003 | August 9, 2003 | Pitcher | Milwaukee Brewers | [215] |
| Ernie Manning | May 3, 1914 | June 14, 1914 | Pitcher | St. Louis Browns | [216] |
| Jack Manning | April 23, 1873 | October 14, 1886 | Pitcher | Boston Red Stockings, Baltimore Canaries, Hartford Dark Blues, Boston Red Caps, Cincinnati Reds (1876–1880), Buffalo Bisons (NL), Philadelphia Quakers, Baltimore Orioles (AA) | [217] |
| Jim Manning (OF/2B) | May 16, 1884 | October 13, 1889 | Outfielder/infielder | Boston Beaneaters, Detroit Wolverines, Kansas City Cowboys (AA) | [218] |
| Jim Manning (P) | April 15, 1962 | May 2, 1962 | Pitcher | Minnesota Twins | [219] |
| Rick Manning | May 23, 1975 | October 4, 1987 | Outfielder | Cleveland Indians, Milwaukee Brewers | [220] |
| Rube Manning | September 25, 1907 | August 22, 1910 | Pitcher | New York Highlanders | [221] |
| Tim Manning | May 1, 1882 | July 20, 1885 | Second baseman | Providence Grays, Baltimore Orioles (AA) | [222] |
| Don Manno | September 22, 1940 | July 10, 1941 | Outfielder | Boston Braves | [223] |
| Julio Mañón | June 5, 2003 | October 1, 2006 | Pitcher | Montreal Expos, Baltimore Orioles | [224] |
| Ramón Mañón | April 19, 2001 | April 19, 2001 | Pitcher | Texas Rangers | [225] |
| Fred Manrique | August 23, 1981 | May 11, 1991 | Second baseman | Toronto Blue Jays, Montreal Expos, St. Louis Cardinals, Chicago White Sox, Texas Rangers, Minnesota Twins, Oakland Athletics | [226] |
| John Mansell | May 9, 1882 | July 22, 1882 | Outfielder | Philadelphia Athletics (AA) | [227] |
| Mike Mansell | May 1, 1879 | October 15, 1884 | Outfielder | Syracuse Stars (NL), Cincinnati Reds (1876–1880), Pittsburgh Alleghenys, Philadelphia Athletics (AA), Richmond Virginians | [228] |
| Tom Mansell | May 1, 1879 | October 15, 1884 | Outfielder | Troy Trojans, Syracuse Stars (NL), Detroit Wolverines, St. Louis Browns, Cincinnati Red Stockings (AA), Columbus Buckeyes | [229] |
| Jeff Manship | August 15, 2009 | Pitcher | Minnesota Twins | [230] | |
| Lou Manske | August 31, 1906 | September 7, 1906 | Pitcher | Pittsburgh Pirates | [231] |
| Matt Mantei | June 18, 1995 | July 1, 2005 | Pitcher | Florida Marlins, Arizona Diamondbacks, Boston Red Sox | [232] |
| Félix Mantilla | June 21, 1956 | October 2, 1966 | Utility player | Milwaukee Braves, New York Mets, Boston Red Sox, Houston Astros | [233] |
| Mickey Mantle β | April 17, 1951 | September 28, 1968 | Outfielder | New York Yankees | [234] |
| Jeff Manto | June 7, 1990 | April 20, 2000 | Third baseman | Cleveland Indians, Philadelphia Phillies, Baltimore Orioles, Boston Red Sox, Seattle Mariners, Detroit Tigers, New York Yankees, Colorado Rockies | [235] |
| Barry Manuel | September 6, 1991 | August 8, 1998 | Pitcher | Texas Rangers, Montreal Expos, New York Mets, Arizona Diamondbacks | [236] |
| Charlie Manuel | April 8, 1969 | September 21, 1975 | Outfielder | Minnesota Twins, Los Angeles Dodgers | [237] |
| Jerry Manuel | September 18, 1975 | May 30, 1982 | Second baseman | Detroit Tigers, Montreal Expos, San Diego Padres | [238] |
| Moxie Manuel | September 25, 1905 | September 14, 1908 | Pitcher | Washington Senators, Chicago White Sox | [239] |
| Robert Manuel | July 9, 2009 | Pitcher | Cincinnati Reds, Boston Red Sox | [240] | |
| Frank Manush | August 31, 1908 | October 2, 1908 | Third baseman | Philadelphia Athletics | [241] |
| Heinie Manush β | April 20, 1923 | May 22, 1939 | Outfielder | Detroit Tigers, St. Louis Browns, Washington Senators, Boston Red Sox, Brooklyn Dodgers, Pittsburgh Pirates | [242] |
| Dick Manville | April 30, 1950 | September 10, 1952 | Pitcher | Boston Braves, Chicago Cubs | [243] |
| Kirt Manwaring | September 15, 1987 | October 3, 1999 | Catcher | San Francisco Giants, Houston Astros, Colorado Rockies | [244] |
| Josías Manzanillo | October 5, 1991 | September 22, 2004 | Pitcher | Boston Red Sox, Milwaukee Brewers, New York Mets, New York Yankees, Seattle Mariners, Pittsburgh Pirates, Cincinnati Reds, Florida Marlins | [245] |
| Ravelo Manzanillo | September 25, 1988 | May 9, 1995 | Pitcher | Chicago White Sox, Pittsburgh Pirates | [246] |
| Tommy Manzella | September 8, 2009 | Shortstop | Houston Astros | [247] | |
| Rolla Mapel | August 31, 1919 | September 11, 1919 | Pitcher | St. Louis Browns | [248] |
| Cliff Mapes | April 20, 1948 | September 28, 1952 | Outfielder | New York Yankees, St. Louis Browns, Detroit Tigers | [249] |
| Howard Maple | May 19, 1932 | September 18, 1932 | Catcher | Washington Senators | [250] |
| George Mappes | September 23, 1885 | October 9, 1886 | Second baseman | Baltimore Orioles (AA), St. Louis Maroons | [251] |
| Paul Marak | September 1, 1990 | October 2, 1990 | Pitcher | Atlanta Braves | [252] |
| Georges Maranda | April 26, 1960 | September 10, 1962 | Pitcher | San Francisco Giants, Minnesota Twins | [253] |
| Rabbit Maranville β | September 10, 1912 | September 29, 1935 | Shortstop | Boston Braves, Pittsburgh Pirates, Chicago Cubs, Brooklyn Robins, St. Louis Cardinals | [254] |
| Firpo Marberry | August 11, 1923 | June 10, 1936 | Pitcher | Washington Senators, Detroit Tigers, New York Giants | [255] |
| Walt Marbet | June 17, 1913 | June 25, 1913 | Pitcher | St. Louis Cardinals | [256] |
| Phil Marchildon | September 22, 1940 | July 16, 1950 | Pitcher | Philadelphia Athletics, Boston Red Sox | [257] |
| Johnny Marcum | September 7, 1933 | September 30, 1939 | Pitcher | Philadelphia Athletics, Boston Red Sox, St. Louis Browns, Chicago White Sox | [258] |
| Shaun Marcum | September 6, 2005 | Pitcher | Toronto Blue Jays, Milwaukee Brewers | [259] | |
| Leo Marentette | September 26, 1965 | June 15, 1969 | Pitcher | Detroit Tigers, Montreal Expos | [260] |
| Joe Margoneri | April 25, 1956 | June 3, 1957 | Pitcher | New York Giants | [261] |
| Juan Marichal β | July 19, 1960 | April 16, 1975 | Pitcher | San Francisco Giants, Boston Red Sox, Los Angeles Dodgers | [262] |
| Jhan Mariñez | July 16, 2010 | Pitcher | Florida Marlins | [263] | |
| Dan Marion | April 23, 1914 | September 30, 1915 | Pitcher | Brooklyn Tip-Tops | [264] |
| Marty Marion | April 16, 1940 | July 6, 1953 | Shortstop | St. Louis Cardinals, St. Louis Browns | [265] |
| Red Marion | September 16, 1935 | July 22, 1943 | Outfielder | Washington Senators | [266] |
| Roger Maris | April 16, 1957 | September 29, 1968 | Outfielder | Cleveland Indians, Kansas City Athletics, New York Yankees, St. Louis Cardinals | [267] |
| Nick Markakis | April 3, 2006 | Outfielder | Baltimore Orioles | [268] | |
| Duke Markell | September 6, 1951 | September 29, 1951 | Pitcher | St. Louis Browns | [269] |
| Gene Markland | April 25, 1950 | May 7, 1950 | Second baseman | Philadelphia Athletics | [270] |
| Cliff Markle | September 18, 1915 | July 14, 1924 | Pitcher | New York Yankees, Cincinnati Reds | [271] |
| Dick Marlowe | September 19, 1951 | September 30, 1956 | Pitcher | Detroit Tigers, Chicago White Sox | [272] |
| Carlos Mármol | June 4, 2006 | Pitcher | Chicago Cubs | [273] | |
| Harry Marnie | September 15, 1940 | September 25, 1942 | Second baseman | Philadelphia Phillies | [274] |
| Fred Marolewski | September 19, 1953 | September 19, 1953 | First baseman | St. Louis Cardinals | [275] |
| Lou Marone | May 30, 1969 | April 18, 1970 | Pitcher | Pittsburgh Pirates | [276] |
| Mike Maroth | June 8, 2002 | Pitcher | Detroit Tigers, St. Louis Cardinals | [277] | |
| Rube Marquard β | September 25, 1908 | September 18, 1925 | Pitcher | New York Giants, Brooklyn Robins, Cincinnati Reds, Boston Braves | [278] |
| Ollie Marquardt | April 14, 1931 | June 8, 1931 | Second baseman | Boston Red Sox | [279] |
| Gonzalo Márquez | August 11, 1972 | June 5, 1974 | First baseman | Oakland Athletics, Chicago Cubs | [280] |
| Isidro Márquez | April 26, 1995 | May 12, 1995 | Pitcher | Chicago White Sox | [281] |
| Jeff Marquez | July 9, 2010 | Pitcher | Chicago White Sox, New York Yankees | [282] | |
| Luis Márquez | April 18, 1951 | July 11, 1954 | Outfielder | Boston Braves, Chicago Cubs, Pittsburgh Pirates | [283] |
| Bob Marquis | April 17, 1953 | July 7, 1953 | Outfielder | Cincinnati Reds | [284] |
| Jason Marquis | June 6, 2000 | Pitcher | Atlanta Braves, St. Louis Cardinals, Chicago Cubs, Colorado Rockies, Washington Nationals, Arizona Diamondbacks | [285] | |
| Jim Marquis | August 8, 1925 | August 11, 1925 | Pitcher | New York Yankees | [286] |
| Roger Marquis | September 25, 1955 | September 25, 1955 | Outfielder | Baltimore Orioles | [287] |
| Lefty Marr | October 3, 1886 | August 16, 1891 | Outfielder | Cincinnati Red Stockings (AA), Columbus Solons, Cincinnati Reds, Cincinnati Kelly's Killers | [288] |
| Chris Marrero | August 27, 2011 | First baseman | Washington Nationals | [289] | |
| Connie Marrero | April 21, 1950 | September 7, 1954 | Pitcher | Washington Senators | [290] |
| Eli Marrero | September 3, 1997 | August 8, 2006 | Utility player | St. Louis Cardinals, Atlanta Braves, Kansas City Royals, Baltimore Orioles, Colorado Rockies, New York Mets | [291] |
| Oreste Marrero | April 12, 1993 | September 26, 1996 | First baseman | Montreal Expos, Los Angeles Dodgers | [292] |
| William Marriott | September 6, 1917 | April 28, 1927 | Third baseman | Chicago Cubs, Boston Braves, Brooklyn Robins | [293] |
| Buck Marrow | July 3, 1932 | July 4, 1938 | Pitchers | Detroit Tigers, Brooklyn Dodgers | [294] |
| Ed Mars | August 12, 1890 | October 12, 1890 | Pitcher | Syracuse Stars (AA) | [295] |
| Armando Marsans | July 4, 1911 | July 13, 1918 | Outfielder | Cincinnati Reds, St. Louis Terriers, St. Louis Browns, New York Yankees | [296] |
| Fred Marsh | April 19, 1949 | May 29, 1956 | Utility infielder | Cleveland Indians, St. Louis Browns, Washington Senators, Chicago White Sox, Baltimore Orioles | [297] |
| Tom Marsh | June 5, 1992 | September 29, 1995 | Outfielder | Philadelphia Phillies | [298] |
| Bill Marshall | June 20, 1931 | September 21, 1934 | Second baseman | Boston Red Sox, Cincinnati Reds | [299] |
| Chip Marshall | June 14, 1941 | June 14, 1941 | Catcher | St. Louis Cardinals | [300] |
| Cuddles Marshall | April 24, 1946 | September 30, 1950 | Pitcher | New York Yankees, St. Louis Browns | [301] |
| Dave Marshall | September 7, 1967 | June 22, 1973 | Outfielder | San Francisco Giants, New York Mets, San Diego Padres | [302] |
| Doc Marshall (C) | April 15, 1904 | October 7, 1909 | Catcher | Philadelphia Phillies, New York Giants, Boston Beaneaters, St. Louis Cardinals, Chicago Cubs, Brooklyn Superbas | [303] |
| Doc Marshall (IF) | September 28, 1929 | September 3, 1932 | Shortstop | New York Giants | [304] |
| Jay Marshall | April 2, 2007 | Pitcher | Oakland Athletics | [305] | |
| Jim Marshall | April 15, 1958 | September 28, 1962 | First baseman | Baltimore Orioles, Chicago Cubs, San Francisco Giants, New York Mets, Pittsburgh Pirates | [306] |
| Joe Marshall | September 7, 1903 | August 17, 1906 | Outfielder | Pittsburgh Pirates, St. Louis Cardinals | [307] |
| Keith Marshall | April 7, 1973 | April 24, 1973 | Outfielder | Kansas City Royals | [308] |
| Max Marshall | May 10, 1942 | July 26, 1944 | Outfielder | Cincinnati Reds | [309] |
| Mike Marshall (P) | May 31, 1967 | October 2, 1981 | Pitcher | Detroit Tigers, Seattle Pilots, Houston Astros, Montreal Expos, Los Angeles Dodgers, Atlanta Braves, Texas Rangers, Minnesota Twins, New York Mets | [310] |
| Mike Marshall (OF) | September 7, 1981 | August 4, 1991 | Outfielder | Los Angeles Dodgers, New York Mets, Boston Red Sox, California Angels | [311] |
| Rube Marshall | September 28, 1912 | September 26, 1915 | Pitcher | Philadelphia Phillies, Buffalo Blues | [312] |
| Sean Marshall | April 9, 2006 | Pitcher | Chicago Cubs | [313] | |
| Willard Marshall | April 14, 1942 | June 15, 1955 | Outfielder | New York Giants, Boston Braves, Cincinnati Reds, Chicago White Sox | [314] |
| Lou Marson | September 28, 2008 | Catcher | Philadelphia Phillies, Cleveland Indians | [315] | |
| Sam Marsonek | July 11, 2004 | July 11, 2004 | Pitcher | New York Yankees | [316] |
| Andy Marte | June 7, 2005 | Third baseman | Atlanta Braves, Cleveland Indians | [317] | |
| Dámaso Marte | June 30, 1999 | Pitcher | Seattle Mariners, Pittsburgh Pirates, Chicago White Sox, New York Yankees | [318] | |
| Luis Marte | September 1, 2011 | Pitcher | Detroit Tigers | [319] | |
| Víctor Marte | September 6, 2009 | Pitcher | Kansas City Royals | [320] | |
| Doc Martel | July 6, 1909 | June 18, 1910 | Utility player | Philadelphia Phillies, Boston Doves | [321] |
| Al Martin (2B) | May 7, 1872 | September 25, 1875 | Second baseman | Eckford of Brooklyn, Brooklyn Atlantics | [322] |
| Al Martin (OF) | July 28, 1992 | September 21, 2003 | Outfielder | Pittsburgh Pirates, San Diego Padres, Seattle Mariners, Tampa Bay Devil Rays | [323] |
| Babe Martin | September 25, 1944 | July 1, 1953 | Outfielder | St. Louis Browns, Boston Red Sox | [324] |
| Barney Martin | April 22, 1953 | April 22, 1953 | Pitcher | Cincinnati Reds | [325] |
| Billy Martin (SS) | October 6, 1914 | October 6, 1914 | Shortstop | Boston Braves | [326] |
| Billy Martin (2B) | April 18, 1950 | October 1, 1961 | Second baseman | New York Yankees, Kansas City Athletics, Detroit Tigers, Cleveland Indians, Cincinnati Reds, Milwaukee Braves, Minnesota Twins | [327] |
| Doc Martin | October 7, 1908 | June 5, 1912 | Pitcher | Philadelphia Athletics | [328] |
| Frank Martin | June 30, 1897 | September 25, 1899 | Third baseman | Louisville Colonels, Chicago Orphans, New York Giants | [329] |
| Fred Martin | April 21, 1946 | September 24, 1950 | Pitcher | St. Louis Cardinals | [330] |
| Gene Martin | July 28, 1968 | September 13, 1968 | Outfielder | Washington Senators (1961–1971) | [331] |
| Hersh Martin | April 23, 1937 | September 23, 1945 | Outfielder | Philadelphia Phillies, New York Yankees | [332] |
| Jack Martin | April 25, 1912 | October 6, 1914 | Shortstop | New York Highlanders, Boston Braves, Philadelphia Phillies | [333] |
| J. C. Martin | September 10, 1959 | August 12, 1972 | Catcher | Chicago White Sox, New York Mets, Chicago Cubs | [334] |
| J. D. Martin | July 20, 2009 | Pitcher | Washington Nationals | [335] | |
| Jerry Martin | September 7, 1974 | September 19, 1984 | Outfielder | Philadelphia Phillies, Chicago Cubs, San Francisco Giants, Kansas City Royals, New York Mets | [336] |
| Joe Martin (OF) | April 28, 1903 | August 31, 1903 | Outfielder | Washington Senators, St. Louis Browns | [337] |
| Joe Martin (3B) | April 27, 1936 | April 19, 1938 | Third baseman | New York Giants, Chicago White Sox | [338] |
| John Martin | August 27, 1980 | October 2, 1983 | Pitcher | St. Louis Cardinals, Detroit Tigers | [339] |
| Leonys Martín | September 2, 2011 | Outfielder | Texas Rangers | [340] | |
| Mike Martin | August 15, 1986 | September 27, 1986 | Catcher | Chicago Cubs | [341] |
| Morrie Martin | April 25, 1949 | April 22, 1959 | Pitcher | Brooklyn Dodgers, Philadelphia Athletics, Chicago White Sox, Baltimore Orioles, St. Louis Cardinals, Cleveland Indians, Chicago Cubs | [342] |
| Norberto Martin | September 20, 1993 | May 4, 1999 | Second baseman | Chicago White Sox, Anaheim Angels, Toronto Blue Jays | [343] |
| Pat Martin | September 20, 1919 | June 6, 1920 | Pitcher | Philadelphia Athletics | [344] |
| Paul Martin | July 2, 1955 | August 16, 1955 | Pitcher | Pittsburgh Pirates | [345] |
| Pepper Martin | April 16, 1928 | October 1, 1944 | Outfielder | St. Louis Cardinals | [346] |
| Phonney Martin | April 26, 1872 | October 21, 1873 | Outfielder | Troy Haymakers, Eckford of Brooklyn, New York Mutuals | [347] |
| Ray Martin | August 15, 1943 | April 25, 1948 | Pitcher | Boston Braves | [348] |
| Renie Martin | May 9, 1979 | September 30, 1984 | Pitcher | Kansas City Royals, San Francisco Giants, Philadelphia Phillies | [349] |
| Russell Martin | May 5, 2006 | Catcher | Los Angeles Dodgers, New York Yankees | [350] | |
| Speed Martin | July 5, 1917 | April 17, 1922 | Pitcher | St. Louis Browns, Chicago Cubs | [351] |
| Stu Martin | April 14, 1936 | September 6, 1943 | Second baseman | St. Louis Cardinals, Pittsburgh Pirates, Chicago Cubs | [352] |
| Tom Martin | April 2, 1997 | July 19, 2007 | Pitcher | Houston Astros, Cleveland Indians, New York Mets, Tampa Bay Devil Rays, Los Angeles Dodgers, Atlanta Braves, Colorado Rockies | [353] |
| Joe Martina | April 19, 1924 | September 30, 1924 | Pitcher | Washington Senators | [354] |
| Alfredo Martínez | April 20, 1980 | June 7, 1981 | Pitcher | California Angels | [355] |
| Anastacio Martínez | May 22, 2004 | July 2, 2004 | Pitcher | Boston Red Sox | [356] |
| Buck Martinez | June 18, 1969 | October 3, 1986 | Catcher | Kansas City Royals, Milwaukee Brewers, Toronto Blue Jays | [357] |
| Carlos Martínez (IF) | September 2, 1988 | July 20, 1995 | Utility infielder | Chicago White Sox, Cleveland Indians, California Angels | [358] |
| Carlos Martínez (P) | April 3, 2006 | Pitcher | Florida Marlins | [359] | |
| Carmelo Martínez | August 22, 1983 | October 2, 1991 | Outfielder | Chicago Cubs, San Diego Padres, Philadelphia Phillies, Pittsburgh Pirates, Kansas City Royals, Cincinnati Reds | [360] |
| Chito Martínez | July 5, 1991 | April 20, 1993 | Outfielder | Baltimore Orioles | [361] |
| Cristhian Martínez | May 21, 2009 | Pitcher | Florida Marlins, Atlanta Braves | [362] | |
| Dave Martinez | June 15, 1986 | October 7, 2001 | Outfielder | Chicago Cubs, Montreal Expos, Cincinnati Reds, San Francisco Giants, Chicago White Sox, Tampa Bay Devil Rays, Texas Rangers, Toronto Blue Jays, Atlanta Braves | [363] |
| Dennis Martínez | September 14, 1976 | September 27, 1998 | Pitcher | Baltimore Orioles, Montreal Expos, Cleveland Indians, Seattle Mariners, Atlanta Braves | [364] |
| Domingo Martínez | September 11, 1992 | October 3, 1993 | First baseman | Toronto Blue Jays | [365] |
| Edgar Martínez | September 12, 1987 | October 3, 2004 | Designated hitter | Seattle Mariners | [366] |
| Félix Martínez | September 3, 1997 | September 30, 2001 | Shortstop | Kansas City Royals, Tampa Bay Devil Rays | [367] |
| Fernando Martínez | May 26, 2009 | Outfielder | New York Mets | [368] | |
| Greg Martinez | March 31, 1998 | September 27, 1998 | Outfielder | Milwaukee Brewers | [369] |
| Héctor Martínez | September 30, 1962 | June 4, 1963 | Outfielder | Kansas City Athletics | [370] |
| J. D. Martinez | July 30, 2011 | Outfielder | Houston Astros | [371] | |
| Javier Martínez | April 2, 1998 | September 27, 1998 | Pitcher | Pittsburgh Pirates | [372] |
| Joe Martinez | April 7, 2009 | Pitcher | San Francisco Giants, Pittsburgh Pirates | [373] | |
| José Martínez (IF) | June 18, 1969 | May 28, 1970 | Second baseman | Pittsburgh Pirates | [374] |
| José Martínez (P) | May 10, 1994 | May 19, 1994 | Pitcher | San Diego Padres | [375] |
| Luis Martínez (P) | September 3, 2003 | September 28, 2003 | Pitcher | Milwaukee Brewers | [376] |
| Luis Martínez (C) | July 15, 2011 | Catcher | Pittsburgh Pirates | [377] | |
| Manny Martínez | June 14, 1996 | October 3, 1999 | Outfielder | Seattle Mariners, Philadelphia Phillies, Pittsburgh Pirates, Montreal Expos | [378] |
| Marty Martínez | May 2, 1962 | October 4, 1972 | Shortstop | Minnesota Twins, Atlanta Braves, Houston Astros, St. Louis Cardinals, Oakland Athletics, Texas Rangers | [379] |
| Michael Martínez | April 3, 2011 | Utility player | Philadelphia Phillies | [380] | |
| Osvaldo Martínez | September 19, 2010 | Shortstop | Florida Marlins | [381] | |
| Pablo Martínez | July 20, 1996 | August 4, 1996 | Shortstop | Atlanta Braves | [382] |
| Pedro Martínez (RHP) | September 24, 1992 | Pitcher | Los Angeles Dodgers, Montreal Expos, Boston Red Sox, New York Mets, Philadelphia Phillies | [383] | |
| Pedro Martínez (LHP) | June 29, 1993 | September 6, 1997 | Pitcher | San Diego Padres, Houston Astros, New York Mets, Cincinnati Reds | [384] |
| Ramón Martínez (P) | August 13, 1988 | May 1, 2001 | Pitcher | Los Angeles Dodgers, Boston Red Sox, Pittsburgh Pirates | [385] |
| Ramón Martínez (IF) | June 20, 1998 | Utility infielder | San Francisco Giants, Chicago Cubs, Detroit Tigers, Philadelphia Phillies, Los Angeles Dodgers, New York Mets | [386] | |
| Rogelio Martínez | July 13, 1950 | July 16, 1950 | Pitcher | Washington Senators | [387] |
| Sandy Martínez | June 24, 1995 | October 3, 2004 | Catcher | Toronto Blue Jays, Chicago Cubs, Florida Marlins, Montreal Expos, Cleveland Indians, Boston Red Sox | [388] |
| Silvio Martínez | April 9, 1977 | October 4, 1981 | Pitcher | Chicago White Sox, St. Louis Cardinals | [389] |
| Ted Martínez | July 18, 1970 | September 30, 1979 | Utility infielder | New York Mets, St. Louis Cardinals, Oakland Athletics, Los Angeles Dodgers | [390] |
| Tino Martinez | August 20, 1990 | October 2, 2005 | First baseman | Seattle Mariners, New York Yankees, St. Louis Cardinals, Tampa Bay Devil Rays | [391] |
| Tippy Martinez | August 9, 1974 | April 18, 1988 | Pitcher | New York Yankees, Baltimore Orioles, Minnesota Twins | [392] |
| Tony Martínez | April 9, 1963 | June 14, 1966 | Shortstop | Cleveland Indians | [393] |
| Víctor Martínez | September 10, 2002 | Catcher | Cleveland Indians, Boston Red Sox, Detroit Tigers | [394] | |
| Willie Martínez | June 14, 2000 | June 14, 2000 | Pitcher | Cleveland Indians | [395] |
| Wedo Martini | July 28, 1935 | August 28, 1935 | Pitcher | Philadelphia Athletics | [396] |
| Shairon Martis | September 4, 2008 | Pitcher | Washington Nationals | [397] | |
| Joe Marty | April 22, 1937 | September 28, 1941 | Outfielder | Chicago Cubs, Philadelphia Phillies | [398] |
| Bob Martyn | June 18, 1957 | April 10, 1959 | Outfielder | Kansas City Athletics | [399] |
| Gary Martz | July 8, 1975 | July 8, 1975 | Outfielder | Kansas City Royals | [400] |
| Randy Martz | September 6, 1980 | August 5, 1983 | Pitcher | Chicago Cubs, Chicago White Sox | [401] |
| John Marzano | July 31, 1987 | September 23, 1998 | Catcher | Boston Red Sox, Texas Rangers, Seattle Mariners | [402] |
| Onan Masaoka | April 5, 1999 | September 30, 2000 | Pitcher | Los Angeles Dodgers | [403] |
| Clyde Mashore | July 11, 1969 | September 30, 1973 | Outfielder | Cincinnati Reds, Montreal Expos | [404] |
| Damon Mashore | June 5, 1996 | July 11, 1998 | Outfielder | Oakland Athletics, Anaheim Angels | [405] |
| Phil Masi | April 23, 1939 | August 17, 1952 | Catcher | Boston Bees/Braves, Pittsburgh Pirates, Chicago White Sox | [406] |
| Harry Maskrey | September 21, 1882 | September 21, 1882 | Outfielder | Louisville Eclipse | [407] |
| Leech Maskrey | May 2, 1882 | July 7, 1886 | Outfielder | Louisville Eclipse/Colonels, Cincinnati Red Stockings (AA) | [408] |
| Charlie Mason | April 26, 1875 | July 4, 1883 | Outfielder | Philadelphia Centennials, Washington Nationals (NA 1875), Philadelphia Athletics (AA) | [409] |
| Del Mason | April 23, 1904 | August 16, 1907 | Pitcher | Washington Senators, Cincinnati Reds | [410] |
| Don Mason | April 14, 1966 | May 30, 1973 | Second baseman | San Francisco Giants, San Diego Padres | [411] |
| Ernie Mason | July 17, 1894 | August 1, 1894 | Pitcher | St. Louis Browns (NL) | [412] |
| Hank Mason | September 12, 1958 | April 24, 1960 | Pitcher | Philadelphia Phillies | [413] |
| Jim Mason | September 25, 1971 | September 24, 1979 | Shortstop | Washington Senators (1961–1971), Texas Rangers, New York Yankees, Toronto Blue Jays, Montreal Expos | [414] |
| Mike Mason | September 13, 1982 | May 8, 1988 | Pitcher | Texas Rangers, Chicago Cubs, Minnesota Twins | [415] |
| Roger Mason | September 4, 1984 | August 11, 1994 | Pitcher | Detroit Tigers, San Francisco Giants, Houston Astros, Pittsburgh Pirates, San Diego Padres, Philadelphia Phillies, New York Mets | [416] |
| Gordon Massa | September 24, 1957 | September 9, 1958 | Catcher | Chicago Cubs | [417] |
| Nick Masset | June 27, 2006 | Pitcher | Texas Rangers, Chicago White Sox, Cincinnati Reds | [418] | |
| Bill Massey | September 18, 1894 | September 30, 1894 | First baseman | Cincinnati Reds | [419] |
| Mike Massey | April 12, 1917 | June 30, 1917 | Second baseman | Boston Braves | [420] |
| Red Massey | April 16, 1918 | August 3, 1918 | Outfielder | Boston Braves | [421] |
| Dan Masteller | June 23, 1995 | October 1, 1995 | First baseman | Minnesota Twins | [422] |
| Walt Masters | July 9, 1931 | August 25, 1939 | Pitcher | Washington Senators, Philadelphia Phillies, Philadelphia Athletics | [423] |
| Justin Masterson | April 24, 2008 | Pitcher | Boston Red Sox, Cleveland Indians | [424] | |
| Paul Masterson | September 15, 1940 | May 3, 1942 | Pitcher | Philadelphia Phillies | [425] |
| Walt Masterson | May 8, 1939 | September 24, 1956 | Pitcher | Washington Senators, Boston Red Sox, Detroit Tigers | [426] |
| Tom Mastny | July 30, 2006 | Pitcher | Cleveland Indians | [427] | |
| Darin Mastroianni | August 24, 2011 | Outfielder | Toronto Blue Jays | [428] | |
| Frank Mata | May 26, 2010 | Pitcher | Baltimore Orioles | [429] | |
| Víctor Mata | July 22, 1984 | June 11, 1985 | Outfielder | New York Yankees | [430] |
| Len Matarazzo | September 6, 1952 | September 6, 1952 | Pitcher | Philadelphia Athletics | [431] |
| Tom Matchick | September 2, 1967 | October 3, 1972 | Utility infielder | Detroit Tigers, Boston Red Sox, Kansas City Royals, Milwaukee Brewers, Baltimore Orioles | [432] |
| Henry Mateo | July 28, 2001 | October 1, 2006 | Second baseman | Montreal Expos, Washington Nationals | [433] |
| Juan Mateo | August 3, 2006 | September 30, 2006 | Pitcher | Chicago Cubs | [434] |
| Julio Mateo | May 7, 2002 | Pitcher | Seattle Mariners | [435] | |
| Marcos Mateo | August 9, 2010 | Pitcher | Chicago Cubs | [436] | |
| Rubén Mateo | June 12, 1999 | August 21, 2004 | Outfielder | Texas Rangers, Cincinnati Reds, Pittsburgh Pirates, Kansas City Royals | [437] |
| Mike Matheny | April 7, 1994 | May 31, 2006 | Catcher | Milwaukee Brewers, Toronto Blue Jays, St. Louis Cardinals, San Francisco Giants | [438] |
| Joe Mather | May 30, 2008 | Outfielder | St. Louis Cardinals, Atlanta Braves | [439] | |
| Joe Mathes | September 19, 1912 | September 9, 1916 | Second baseman | Philadelphia Athletics, St. Louis Terriers, Boston Braves | [440] |
| Bobby Mathews | May 4, 1871 | October 10, 1887 | Pitcher | Fort Wayne Kekiongas, Baltimore Canaries, New York Mutuals, Cincinnati Reds (1876–1880), Providence Grays, Boston Red Caps, Philadelphia Athletics (AA) | [441] |
| Eddie Mathews β | April 15, 1952 | September 27, 1968 | Third baseman | Boston/Milwaukee/Atlanta Braves, Houston Astros, Detroit Tigers | [442] |
| Greg Mathews | June 3, 1986 | October 3, 1992 | Pitcher | St. Louis Cardinals, Philadelphia Phillies | [443] |
| Nelson Mathews | September 9, 1960 | July 18, 1965 | Outfielder | Chicago Cubs, Kansas City Athletics | [444] |
| T. J. Mathews | July 28, 1995 | July 24, 2002 | Pitcher | St. Louis Cardinals, Oakland Athletics, Houston Astros | [445] |
| Terry Mathews | June 21, 1991 | August 11, 1999 | Pitcher | Texas Rangers, Florida Marlins, Baltimore Orioles, Kansas City Royals | [446] |
| Christy Mathewson β | July 17, 1900 | September 4, 1916 | Pitcher | New York Giants, Cincinnati Reds | [447] |
| Henry Mathewson | September 28, 1906 | May 4, 1907 | Pitcher | New York Giants | [448] |
| Carl Mathias | July 31, 1960 | July 14, 1961 | Pitcher | Cleveland Indians, Washington Senators (1961–1971) | [449] |
| Scott Mathieson | June 17, 2006 | Pitcher | Philadelphia Phillies | [450] | |
| Doug Mathis | May 12, 2008 | Pitcher | Texas Rangers | [451] | |
| Jeff Mathis | August 12, 2005 | Catcher | Los Angeles Angels of Anaheim | [452] | |
| Ron Mathis | April 13, 1985 | July 4, 1987 | Pitcher | Houston Astros | [453] |
| Jimmy Mathison | August 29, 1902 | September 29, 1902 | Third baseman | Baltimore Orioles (1901–02) | [454] |
| John Matias | April 7, 1970 | October 1, 1970 | Utility player | Chicago White Sox | [455] |
| Jon Matlack | July 11, 1971 | September 15, 1983 | Pitcher | New York Mets, Texas Rangers | [456] |
| Francisco Matos | July 17, 1994 | August 4, 1994 | Second baseman | Oakland Athletics | [457] |
| Julius Matos | May 31, 2002 | September 28, 2003 | Second baseman | San Diego Padres, Kansas City Royals | [458] |
| Luis Matos | June 19, 2000 | August 9, 2006 | Outfielder | Baltimore Orioles, Washington Nationals | [459] |
| Osiris Matos | July 3, 2008 | Pitcher | San Francisco Giants | [460] | |
| Pascual Matos | May 11, 1999 | August 9, 1999 | Catcher | Atlanta Braves | [461] |
| Dave Matranga | June 27, 2003 | May 8, 2005 | Second baseman | Houston Astros, Los Angeles Angels of Anaheim | [462] |
| Hideki Matsui | March 31, 2003 | Outfielder | New York Yankees, Los Angeles Angels of Anaheim, Oakland Athletics | [463] | |
| Kazuo Matsui | April 6, 2004 | Second baseman | New York Mets, Colorado Rockies, Houston Astros | [464] | |
| Daisuke Matsuzaka | April 5, 2007 | Pitcher | Boston Red Sox | [465] | |
| Al Mattern | September 16, 1908 | April 19, 1912 | Pitcher | Boston Doves/Rustlers/Braves | [466] |
| Troy Mattes | June 19, 2001 | July 27, 2001 | Pitcher | Montreal Expos | [467] |
| C. V. Matteson | June 13, 1884 | June 13, 1884 | Pitcher | St. Louis Maroons | [468] |
| Eddie Matteson | May 30, 1914 | September 1, 1918 | Pitcher | Philadelphia Phillies, Washington Senators | [469] |
| Ryan Mattheus | June 14, 2011 | Pitcher | Washington Nationals | [470] | |
| Charles Matthews | September 25, 1891 | September 25, 1891 | Outfielder | Philadelphia Athletics (AA 1891) | [471] |
| Gary Matthews | September 6, 1972 | October 2, 1987 | Outfielder | San Francisco Giants, Atlanta Braves, Philadelphia Phillies, Chicago Cubs, Seattle Mariners | [472] |
| Gary Matthews Jr. | June 4, 1999 | Outfielder | San Diego Padres, Chicago Cubs, Pittsburgh Pirates, New York Mets, Baltimore Orioles, Texas Rangers, Los Angeles Angels of Anaheim | [473] | |
| Joe Matthews | September 18, 1922 | September 22, 1922 | Pitcher | Boston Braves | [474] |
| Mike Matthews | May 31, 2000 | April 24, 2005 | Pitcher | St. Louis Cardinals, Milwaukee Brewers, San Diego Padres, Cincinnati Reds, New York Mets | [475] |
| Wid Matthews | April 18, 1923 | June 7, 1925 | Outfielder | Philadelphia Athletics, Washington Senators | [476] |
| William Matthews | August 28, 1909 | September 23, 1909 | Pitcher | Boston Red Sox | [477] |
| Dale Matthewson | July 3, 1943 | July 30, 1944 | Pitcher | Philadelphia Athletics | [478] |
| Steve Matthias | April 20, 1884 | June 27, 1884 | Shortstop | Chicago Browns/Pittsburgh Stogies | [479] |
| Bobby Mattick | May 5, 1938 | August 18, 1942 | Shortstop | Chicago Cubs, Cincinnati Reds | [480] |
| Wally Mattick | April 11, 1912 | July 21, 1918 | Outfielder | Chicago White Sox, St. Louis Cardinals | [481] |
| Mike Mattimore | May 3, 1887 | July 21, 1890 | Pitcher | New York Giants, Philadelphia Athletics (AA), Kansas City Cowboys (AA), Brooklyn Gladiators | [482] |
| Don Mattingly | September 8, 1982 | October 1, 1995 | First baseman | New York Yankees | [483] |
| Earl Mattingly | April 15, 1931 | June 9, 1931 | Pitcher | Brooklyn Robins | [484] |
| Ralph Mattis | April 22, 1914 | October 9, 1914 | Outfielder | Pittsburgh Rebels | [485] |
| Cloy Mattox | September 1, 1929 | September 21, 1929 | Catcher | Philadelphia Athletics | [486] |
| Jim Mattox | April 30, 1922 | September 30, 1923 | Catcher | Pittsburgh Pirates | [487] |
| Rick Matula | April 8, 1979 | June 11, 1981 | Pitcher | Atlanta Braves | [488] |
| Brian Matusz | August 4, 2009 | Pitcher | Baltimore Orioles | [489] | |
| Len Matuszek | September 3, 1981 | April 30, 1987 | First baseman | Philadelphia Phillies, Toronto Blue Jays, Los Angeles Dodgers | [490] |
| Harry Matuzak | April 19, 1934 | May 2, 1936 | Pitcher | Philadelphia Athletics | [491] |
| Gene Mauch | April 18, 1944 | September 28, 1957 | Second baseman | Brooklyn Dodgers, Pittsburgh Pirates, Chicago Cubs, Boston Braves, St. Louis Cardinals, Boston Red Sox | [492] |
| Hal Mauck | April 29, 1893 | August 10, 1893 | Pitcher | Chicago Colts | [493] |
| Joe Mauer | April 5, 2004 | Catcher | Minnesota Twins | [494] | |
| Al Maul | June 20, 1884 | September 9, 1901 | Pitcher | Philadelphia Keystones, Philadelphia Quakers, Pittsburgh Alleghenys, Pittsburgh Burghers, Pittsburgh Pirates, Washington Senators (1891–99), Baltimore Orioles (NL), Brooklyn Superbas, Philadelphia Phillies, New York Giants | [495] |
| Mark Mauldin | September 10, 1934 | September 30, 1934 | Third baseman | Chicago White Sox | [496] |
| Ernie Maun | May 16, 1924 | June 11, 1926 | Pitcher | New York Giants, Philadelphia Phillies | [497] |
| Dick Mauney | June 13, 1945 | June 22, 1947 | Pitcher | Philadelphia Phillies | [498] |
| Harry Maupin | October 5, 1898 | July 1, 1899 | Pitcher | St. Louis Browns (NL), Cleveland Spiders | [499] |
| Dave Maurer | July 22, 2000 | August 28, 2004 | Pitcher | San Diego Padres, Cleveland Indians, Toronto Blue Jays | [500] |
| Rob Maurer | September 8, 1991 | October 4, 1992 | First baseman | Texas Rangers | [501] |
| Ralph Mauriello | September 13, 1958 | September 27, 1958 | Pitcher | Los Angeles Dodgers | [502] |
| Carmen Mauro | October 1, 1948 | September 27, 1953 | Outfielder | Chicago Cubs, Brooklyn Dodgers, Washington Senators, Philadelphia Athletics | [503] |
| Tim Mauser | July 7, 1991 | May 5, 1995 | Pitcher | Philadelphia Phillies, San Diego Padres | [504] |
| Bob Mavis | September 17, 1949 | September 17, 1949 | Pinch runner | Detroit Tigers | [505] |
| Brian Maxcy | May 26, 1995 | April 25, 1996 | Pitcher | Detroit Tigers | [506] |
| Larry Maxie | August 30, 1969 | August 31, 1969 | Pitcher | Atlanta Braves | [507] |
| Dal Maxvill | June 10, 1962 | September 28, 1975 | Shortstop | St. Louis Cardinals, Oakland Athletics, Pittsburgh Pirates | [508] |
| Bert Maxwell | September 12, 1906 | September 14, 1914 | Pitcher | Pittsburgh Pirates, Philadelphia Athletics, New York Giants, Brooklyn Tip-Tops | [509] |
| Charlie Maxwell | September 20, 1950 | April 26, 1964 | Outfielder | Boston Red Sox, Baltimore Orioles, Detroit Tigers, Chicago White Sox | [510] |
| Jason Maxwell | September 1, 1998 | October 7, 2001 | Utility infielder | Chicago Cubs, Minnesota Twins | [511] |
| Justin Maxwell | September 5, 2007 | Outfielder | Washington Nationals | [512] | |
| Buckshot May | May 9, 1924 | May 9, 1924 | Pitcher | Pittsburgh Pirates | [513] |
| Carlos May | September 6, 1968 | October 2, 1977 | Outfielder | Chicago White Sox, New York Yankees, California Angels | [514] |
| Darrell May | September 10, 1995 | July 15, 2005 | Pitcher | Atlanta Braves, Pittsburgh Pirates, California/Anaheim Angels, Kansas City Royals, San Diego Padres, New York Yankees | [515] |
| Dave May | July 28, 1967 | October 1, 1978 | Outfielder | Baltimore Orioles, Milwaukee Brewers, Atlanta Braves, Texas Rangers, Pittsburgh Pirates | [516] |
| Derrick May | September 6, 1990 | October 3, 1999 | Outfielder | Chicago Cubs, Milwaukee Brewers, Houston Astros, Philadelphia Phillies, Montreal Expos, Baltimore Orioles | [517] |
| Jakie May | June 26, 1917 | September 25, 1932 | Pitcher | St. Louis Cardinals, Cincinnati Reds, Chicago Cubs | [518] |
| Jerry May | September 19, 1964 | June 3, 1973 | Catcher | Pittsburgh Pirates, Kansas City Royals, New York Mets | [519] |
| Lee May | September 1, 1965 | September 24, 1982 | First baseman | Cincinnati Reds, Houston Astros, Baltimore Orioles, Kansas City Royals | [520] |
| Lucas May | September 4, 2010 | Catcher | Kansas City Royals | [521] | |
| Milt May | September 8, 1970 | September 30, 1984 | Catcher | Pittsburgh Pirates, Houston Astros, Detroit Tigers, Chicago White Sox, San Francisco Giants | [522] |
| Pinky May | April 21, 1939 | October 3, 1943 | Third baseman | Philadelphia Phillies | [523] |
| Rudy May | April 18, 1965 | September 21, 1983 | Pitcher | California Angels, New York Yankees, Baltimore Orioles, Montreal Expos | [524] |
| Scott May | September 2, 1988 | August 25, 1991 | Pitcher | Texas Rangers, Chicago Cubs | [525] |
| Yunesky Maya | September 7, 2010 | Pitcher | Washington Nationals | [526] | |
| John Mayberry | September 10, 1968 | September 28, 1982 | First baseman | Houston Astros, Kansas City Royals, Toronto Blue Jays, New York Yankees | [527] |
| John Mayberry Jr. | May 23, 2009 | Outfielder | Philadelphia Phillies | [528] | |
| Cameron Maybin | August 17, 2007 | Outfielder | Detroit Tigers, Florida Marlins, San Diego Padres | [529] | |
| Lee Maye | July 17, 1959 | June 29, 1971 | Outfielder | Milwaukee Braves, Houston Astros, Cleveland Indians, Washington Senators (1961–1971), Chicago White Sox | [530] |
| Ed Mayer (3B) | April 19, 1890 | September 30, 1891 | Third baseman | Philadelphia Phillies | [531] |
| Ed Mayer (P) | September 15, 1957 | June 5, 1958 | Pitcher | Chicago Cubs | [532] |
| Erskine Mayer | September 4, 1912 | September 27, 1919 | Pitcher | Philadelphia Phillies, Pittsburgh Pirates, Chicago White Sox | [533] |
| Sam Mayer | September 7, 1915 | September 29, 1915 | Outfielder | Washington Senators | [534] |
| Wally Mayer | September 28, 1911 | September 2, 1919 | Catcher | Chicago White Sox, Boston Red Sox, St. Louis Browns | [535] |
| Paddy Mayes | June 11, 1911 | June 18, 1911 | Outfielder | Philadelphia Phillies | [536] |
| Buster Maynard | September 17, 1940 | April 26, 1946 | Outfielder | New York Giants | [537] |
| Chick Maynard | June 27, 1922 | July 8, 1922 | Shortstop | Boston Red Sox | [538] |
| Brent Mayne | September 18, 1990 | October 2, 2004 | Catcher | Kansas City Royals, New York Mets, Oakland Athletics, San Francisco Giants, Colorado Rockies, Arizona Diamondbacks, Los Angeles Dodgers | [539] |
| Eddie Mayo | May 22, 1936 | October 3, 1948 | Infielder | New York Giants, Boston Bees, Philadelphia Athletics, Detroit Tigers | [540] |
| Jackie Mayo | September 19, 1948 | September 27, 1953 | Outfielder | Philadelphia Phillies | [541] |
| Al Mays | May 10, 1885 | May 2, 1890 | Pitcher | Louisville Colonels, New York Metropolitans, Brooklyn Bridegrooms, Columbus Solons | [542] |
| Carl Mays | April 15, 1915 | September 24, 1929 | Pitcher | Boston Red Sox, New York Yankees, Cincinnati Reds, New York Giants | [543] |
| Joe Mays | April 7, 1999 | July 22, 2006 | Pitcher | Minnesota Twins, Kansas City Royals, Cincinnati Reds | [544] |
| Willie Mays β | May 25, 1951 | September 9, 1973 | Center fielder | New York Giants, San Francisco Giants, New York Mets | [545] |
| Matt Maysey | July 8, 1992 | September 28, 1993 | Pitcher | Montreal Expos, Milwaukee Brewers | [546] |
| Edwin Maysonet | September 7, 2008 | Infielder | Houston Astros | [547] | |
| Luis Maza | May 14, 2008 | Second baseman | Los Angeles Dodgers | [548] | |
| Bill Mazeroski β | July 7, 1956 | October 4, 1972 | Second baseman | Pittsburgh Pirates | [549] |
| Vin Mazzaro | June 2, 2009 | Pitcher | Oakland Athletics, Kansas City Royals | [550] | |
| Mel Mazzera | September 9, 1935 | September 29, 1940 | Outfielder | St. Louis Browns, Philadelphia Phillies | [551] |
| Lee Mazzilli | September 7, 1976 | September 29, 1989 | Center fielder | New York Mets, Texas Rangers, New York Yankees, Pittsburgh Pirates, Toronto Blue Jays | [552] |