| Jack O'Donnell | |
| Birth Name: | John O'Donnell[1] |
| Birth Date: | c. 1877 |
| Death Date: | c. 1956 |
| Relatives: | Iggy O'Donnell brother[2] |
| Ru Position: | hooker |
| Repyears1: | 1899 |
| Repteam1: | Australia |
| Repcaps1: | 1 |
| Reppoints1: | 0 |
John O'Donnell (c. 1877 – c. 1956) was a rugby union player who represented Australia.
O'Donnell, a hooker, claimed 1 international rugby cap for Australia. His debut game was against Great Britain, at Sydney, on 12 August 1899.