| John Gere Jayne | |
| Birth Date: | 12 May 1874 |
| Birth Place: | Berwick, Pennsylvania, U.S. |
| Death Place: | Berwick, Pennsylvania, U.S. |
| Player Sport1: | Baseball |
| Player Years2: | 1893–1897 |
| Player Team2: | Princeton |
| Player Positions: | Pitcher, outfielder |
| Coach Sport1: | Football |
| Coach Years2: | 1897–1898 |
| Coach Team2: | Sewanee |
| Coach Years3: | 1899–1900 |
| Coach Team3: | North Carolina (assistant) |
| Overall Record: | 5–3–1 |
| Championships: | 1 SIAA (1898) |
John Gere Jayne (May 12, 1874 – September 6, 1920) was an attorney and American football and baseball coach for the Sewanee Tigers of .
Jayne was the son of Samuel Carver Jayne and Hattie Gere. Samuel was the cashier at the First National Bank.[1] [2] Hattie's mother was the aunt of Grover Cleveland.[3] He attended Princeton University, where he got his law degree.[4] He was a pitcher and outfielder on the baseball team.[5] [6] He graduated in June 1897.[7]
Jayne's first year coaching Sewanee football was the worst in its history. He then coached the 1898 Sewanee football team to the Southern Intercollegiate Athletic Association (SIAA) championship.[8]