| Alex Johnston | |
| Fullname: | Alexander Johnston |
| Birth Date: | 7 December 1881 |
| Death Place: | Heidelberg, Victoria |
| Originalteam: | Lancefield,[1] North Melbourne (VFA)[2] |
| Height: | 170 cm |
| Weight: | 72 kg |
| Statsend: | 1908 |
| Years1: | 1906 |
| Club1: | Carlton |
| Games Goals1: | 6 (0) |
| Years2: | 1908 |
| Club2: | Richmond |
| Games Goals2: | 1 (0) |
| Games Goalstotal: | 7 (0) |
Alexander Johnston (7 December 1881 – 19 March 1965) was an Australian rules footballer who played for the Carlton Football Club and Richmond Football Club in the Victorian Football League (VFL).[3]