Joseph Colnon

Aaron Joseph Colnon (August 5, 1870 – December 8, 1936) was an American football player and coach. He was the fifth head football coach at Colgate University and he held that position for the 1896 season. His coaching record at Colgate was 3–4–1.

Colnon played on the Cornell football team from 1889 to 1893. After graduating, he later played with the Duquesne and Crescent Athletic Clubs in New York. Before coaching at Colgate in 1896, he served as an assistant coach at Cornell. He was later a lawyer.