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- Mac Abbott (1877–1960), Australian politician
- Margaret Abbott (1878–1955), American golfer
- Margaret Ives Abbott (1878–1955), American golfer
- Mary Bethune Abbott (1823–1898), wife of Canadian Prime Minister John Joseph Caldwell Abbott
- Maude Abbott (1869–1930), Canadian doctor
- Mickey Abbott, fictional Seinfeld character
- Mishael Abbott (born 1981), American race car driver
- Monica Abbott (born 1985), American softball player
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