William Mann Fincke (January 1, 1878 – May 31, 1927) was an American football player, pacifist minister, and educator. He played college football for the Yale Bulldogs football team and was selected as a consensus All-American in 1900. He later became a Presbyterian minister, pacifist, and proponent of the social gospel. Along with his wife, Helen, he founded both the Brookwood Labor College and the Manumit School.