| Leo O'Halloran | |
| Fullname: | Leo Denis O'Halloran |
| Birth Date: | 11 June 1925 |
| Birth Place: | Colac, Victoria |
| Death Place: | Geelong, Victoria[1] |
| Originalteam: | Barwon Heads |
| Height: | 189 cm |
| Weight: | 83 kg |
| Statsend: | 1953 |
| Years1: | 1949–1952 |
| Club1: | Geelong |
| Games Goals1: | 20 (19) |
| Years2: | 1953 |
| Club2: | South Melbourne |
| Games Goals2: | 9 (11) |
| Games Goalstotal: | 29 (30) |
Leo Denis O'Halloran (11 June 1925 – 27 October 1990)[2] was an Australian rules footballer who played with Geelong and South Melbourne in the Victorian Football League (VFL).
A follower and forward, O'Halloran was already 24 when he started his league career, having come to Geelong from Barwon Heads.[3] [4] While he was at the club in 1951 and 1952, Geelong won back to back premierships, but O'Halloran never featured in a single final.[3] He struggled with injuries and the most he played in a season for Geelong was seven games in 1951.[3] His performances for the Geelong seconds in 1952 won him a Gardiner Medal.
He spent the 1953 VFL season at South Melbourne, playing as a rover.[5]