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- Sunny Mabrey, model/actress (Gadsden)
- Harry Mabry, television newscaster (Birmingham)
- Anthony Madison, NFL player- Pittsburgh Steelers (Thomasville)
- Boots Mallory, film actress (Mobile)
- Alfred Malone, NFL player- Houston Texans (Frisco City)
- William March; writer, World War I hero (Mobile)
- Debra Marshall, former WWE diva (Tuscaloosa)
- Kerry James Marshall, artist (Birmingham)
- Chris Martin, former NFL player (Huntsville)
- Harold E. Martin, newspaperman Montgomery
- Hugh Martin, songwriter (Birmingham)
- James D. Martin, U.S. representative from Alabama's 7th congressional district (1965 to 1967) (Gadsden)
- F. David Mathews, educator (Grove Hill)
- Evan Mathis, NFL player- Philadelphia Eagles (Birmingham)
- Willie Mays, Hall of Fame MLB center fielder (Birmingham)
- Robert R. McCammon, horror writer (Birmingham)
- Willie McCovey, baseball player (Mobile)
- Michael McCullers, screenwriter
- Bryant H. McGill, poet (Mobile)
- Alexander McGillivray, Creek Indian Chief (Montgomery)
- Lachlan McGillivray, Scots-Indian trader (Montgomery)
- Garnie W. McGinty, Louisiana historian (Montevallo)
- Joe McInnes, corporate and state executive, (Wetumpka)
- Frank McIntyre, U.S. Army general (Montgomery)
- Ronald McKinnon,NFL Player- Arizona Cardinals (Elba, Alabama)
- Steve McLendon, NFL player- Pittsburgh Steelers (Ozark)
- Gertrude Michael, film actress (Talladega)
- Don Mincher, baseball player (Huntsville)
- Grover Mitchell, jazz trombonist (Whatley)
- John Mitchell, NFL coach- Pittsburgh Steelers (Mobile)
- Wilmer Mizell, U.S. representative from North Carolina; baseball pitcher for St. Louis Cardinals, Pittsburgh Pirates, New York Mets (Vinegar Bend)
- Jamario Moon, basketball player (Goodwater)
- Charles Moore, civil rights photojournalist (Hackleburg)
- Roy Moore, chief justice of the Alabama Supreme Court (2001-2003) (Gadsden)
- Thomas Hinman Moorer; admiral- U.S. Navy, Chairman of the Joint Chiefs of Staff (Mount Willing)
- Eric Motley, public administrator (Montgomery)
- Morgan Murphy (journalist), humorist, and author (Mountain Brook)
- Albert Murray, writer (Nokomis)
- Pete Myers, basketball player/coach (Mobile)
Read more about this topic: List Of People From Alabama