Frank Leon "Doc" Kelker (December 9, 1913 – May 23, 2003) was an All-American football end who played college football for Western Reserve, now known as Case Western Reserve University, from 1935–1937.
Spanning high school and college, he played in 54-consecutive football games without a loss.
As an African American, his athletic career ended after college as no professional sports had yet broken the color barrier.