| Jack O'Connor | |
| Birth Name: | John Aloysius O'Connor[1] |
| Birth Date: | 11 October 1906 |
| Birth Place: | Dundas, New South Wales |
| Death Date: | c. 1980 |
| Ru Position: | lock |
| Repyears1: | 1928 |
| Repteam1: | Wallabies |
| Repcaps1: | 4 |
| Reppoints1: | 3 |
John Aloysius O'Connor (11 October 1906 – c. 1980) was a rugby union player who represented Australia.
O'Connor, a lock, was born in Dundas, New South Wales and claimed a total of 4 international rugby caps for Australia.