| John O'Conor | |
| Full Name: | John Hamilton O'Conor |
| Birth Place: | Letterkenny, Ireland |
| Death Place: | Rathgar, Ireland |
| Position: | Forward |
| Repyears1: | 1888–96 |
| Repcaps1: | 17 |
| Reppoints1: | 0 |
John Hamilton O'Conor was an Irish international rugby union player.
A Bective Rangers forward, O'Conor was capped 17 times for Ireland from 1888 to 1896.[1] He was a member of the side which won the 1894 Home Nations triple crown and held the captaincy the following season for a match against England.[2]
O'Conor served as president of the Irish Rugby Football Union in 1911–12.[3]