| Jack Ryan | |
| Fullname: | John Daniel Ryan |
| Birth Date: | 24 June 1873 |
| Birth Place: | Clunes, Victoria |
| Death Place: | Creswick, Victoria |
| Originalteam: | Creswick |
| Statsend: | 1899 |
| Years1: | 1899 |
| Games Goals1: | 1 (0) |
Jack Ryan (24 June 1873 – 30 November 1931) was an Australian rules footballer who played with St Kilda in the Victorian Football League (VFL).