| John O'Hearn | |
| Birth Date: | 28 July 1893 |
| Birth Place: | Brookline, Massachusetts, U.S. |
| Death Place: | Brookline, Massachusetts, U.S. |
| Height Ft: | 5 |
| Height In: | 10 |
| Weight Lbs: | 173 |
| Position: | End |
| College: | Cornell |
| Pfr: | OHeaJa20 |
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| Collegehof: | 1274 |
John Ewing O'Hearn (July 28, 1893 – July 22, 1977) was an American professional football player who was an end in the National Football League (NFL). He played in 1920 with the Cleveland Tigers and in 1921 with the Buffalo All-Americans. O'Hearn graduated from Cornell University, where he was a member of the Sphinx Head Society. He was elected to the College Football Hall of Fame in 1972.
His younger brother, Ed O'Hearn, played for the NFL's New York Brickley Giants in 1921. Both brothers played for the Tigers in 1920.[1]