| Bill Ahern | |
| Fullname: | William Joseph Ahern |
| Birth Date: | 2 March 1865 |
| Birth Place: | County Cork, Ireland |
| Death Place: | Prahran, Victoria |
| Originalteam: | Preston (VFA) |
| Position: | Ruck |
| Statsend: | 1897 |
| Years1: | 1897 |
| Games Goals1: | 1 (0) |
William Joseph Ahern (2 March 1865 – 26 May 1938) was an Australian rules footballer who played one game for Carlton in the first season of the Victorian Football League (VFL) in 1897.[1]
For many years he was believed to have been born in 1873 but this was found to be incorrect in 2016.[2]