| Gus Robertson | |
| Fullname: | Barclay Augustus Robertson |
| Birth Date: | 29 August 1883 |
| Birth Place: | Prahran, Victoria |
| Death Place: | St Kilda, Victoria |
| Statsend: | 1902 |
| Years1: | 1901–02 |
| Games Goals1: | 18 (1) |
Barclay Augustus Robertson (29 August 1883 – 10 March 1905) was an Australian rules footballer who played with St Kilda in the Victorian Football League (VFL).