Mary Logan may refer to: Mary Logan Reddick (1914–1966), American neuroembryologist and professor Mary Logan Tucker (1858–1940), American political activist Mary Phyllis Joan Logan, birth name of Concordia Merrel (1885–1962), English stage- and silent film actress, photographer's model, and author of romantic fiction Mary Simmerson Cunningham Logan (1838–1923), American writer and editor