| Jack Trehey | |
| Fullname: | John Thomas Trehey |
| Birth Date: | 28 May 1882 |
| Birth Place: | Carlton, Victoria |
| Death Place: | Melbourne, Victoria |
| Originalteam: | Northcote Juniors |
| Statsend: | 1903 |
| Years1: | 1902 |
| Games Goals1: | 1 (0) |
| Years2: | 1903 |
| Games Goals2: | 6 (1) |
| Games Goalstotal: | 7 (1) |
Jack Trehey (28 May 1882 – 5 December 1943) was an Australian rules footballer who played with Fitzroy and Essendon in the Victorian Football League (VFL).[1]