| Brett Mahony | |
| Fullname: | Brett Mahony |
| Birth Date: | 4 April 1970 |
| Originalteam: | De La Salle, (VAFA) |
| Statsend: | 1989 |
| Years1: | 1989 |
| Games Goals1: | 2 (0) |
Brett Mahony (born 4 April 1970) is a former Australian rules footballer who played two games for Richmond in the Victorian Football League (VFL) in 1989. He was recruited from the De La Salle in the Victorian Amateur Football Association (VAFA).