John H. Mahan (July 22, 1898 - September 2, 1955) was an American track and field athlete who competed in the 1920 Summer Olympics. He was born in Gainesville, Texas.[1]
Mahan a fullback and kicker on the national champion 1919 Texas A&M Aggies football team under head coach Dana X. Bible.[2]
In 1920, he finished twelfth in the javelin throw competition.