| Gus Hefter | |
| Fullname: | William Augustus Hefter |
| Birth Date: | 29 April 1873 |
| Birth Place: | Melbourne |
| Death Place: | South Melbourne, Victoria |
| Originalteam: | West Melbourne Juniors |
| Statsend: | 1899 |
| Years1: | 1899 |
| Games Goals1: | 2 (0) |
Gus Hefter (29 April 1873 – 1 February 1922) was an Australian rules footballer who played with St Kilda in the Victorian Football League (VFL).