Marion Benedict Cothren (1880–1949) was an American suffrage and peace activist, lawyer, and children's author.

Marion was a 1900 graduate of Vassar College and pursued teacher training at Columbia University (MA 1901).

She was on the National Advisory Council of the National Woman's Party, one of the honorary chairs of the Woman's Peace Party when it was founded in 1915, and was one of the thirty American women to attend the International Congress of Women at the Hague that same year.

[8] Marion Cothren's writings for children included Cher Ami: The Story of a Carrier Pigeon (1934),[9] The Adventures of Dudley and Guilderoy (1941),[10] Pigeon Heroes: Birds of War and Messengers of Peace (1944),[11] Buried Treasure: The Story of America's Coal (1945),[12]This is the Moon (1946),[13] and Pictures of France by her Children (published posthumously, 1950).

[14] She also wrote The ABC of Voting, A Handbook of Government and Politics for the Women of New York State (1918) to instruct new female voters.