| Jack Cronin | |
| Number: | 5 |
| Position: | Back |
| Birth Date: | 3 May 1903 |
| Birth Place: | Hingham, Massachusetts, U.S. |
| Death Place: | Jupiter, Florida, U.S. |
| Height Ft: | 5 |
| Height In: | 11 |
| Weight Lbs: | 178 |
| College: | Boston College |
| Pastteams: | |
| Highlights: | |
| Pfr: | C/CronJa20 |
John Patrick Cronin (May 3, 1903 – January 18, 1993) was an American football back who played four seasons with the Providence Steam Roller of the National Football League (NFL). He played college football at Boston College. He also attended Dean College in Franklin, Massachusetts.[1] Jack's brother Bill and nephew Bill also played football.[2]