Mary Logan Tucker (June 20, 1858 – March 16, 1940) was an American political activist. She attended the Convent of the Visitation, Georgetown, in Washington, D.C. Tucker organized and founded the Georgetown Alumnae Association and was elected and served as its first president in 1893. She was an active member of the Illinois State Association and the Illinois State Society of Washington, D.C. from the late nineteenth century until her death. She also served as the president of the Dames of the Loyal Legion of the United States from 1924 to 1928, and was a member of the Society of the Daughters of the American Revolution, the Society of the Army of the Tennessee, and the Legion of Loyal Women.