Mary Reid may refer to:
Mary Reid (activist) (1953–2003), Irish activist, socialist and poet Mary Reid Macarthur (1880–1921), Scottish suffragist and trades unionist Mary Hiester Reid (1854–1921), American-born Canadian painter and teacher Mary Martha Reid (1812–1894), Florida's "most famous nurse and Confederate heroine" Mary Greyeyes-Reid (1920–2011), first woman of the First Nations to join the Canadian Women's Army Corps Mary E. Wrinch (1878–1969), British-Canadian artist
Fictional characters Mary Reid, a character in the UK TV soap opera Brookside, played by Carolyn Jordan
See also Mary Read (?–1721), pirate Mary Reed (disambiguation) Mary Read (disambiguation) Mary Rede, former name of British poet and novelist Mary Grimstone