Mary Foy may refer to:
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Mary Foy (librarian) (1862–1962), first woman head librarian of the Los Angeles Public Library
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Mary Lou Foy (born 1944), American photojournalist
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Mary Foy (politician)
Mary Kelly Foy (; born 27 February 1968) is a British Labour Party politician serving as the Member of Parliament (MP) for the City of Durham since the 2019 general election. She is a member of the Socialist Campaign Group parliamentary c ...
, British politician and Labour Party MP for the City of Durham since 2019
{{hndis, Foy, Mary