| Roles | Competed in Olympic Games | |
|---|---|---|
| Sex | Male | |
| Full name | Donald Alexander "Don"•Johnston | |
| Used name | Don•Johnston | |
| Born | 30 October 1929 in Woodstock, Cape Town, Western Cape |  RSA |
| Died | 22 December 2018 (aged 89 years 1 month 23 days) | |
| NOC | South Africa | RSA |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1948 Summer Olympics | Swimming (Aquatics) | RSA |
Don Johnston | |||
| 400 metres Freestyle, Men (Olympic) | 14 | |||||
| 1,500 metres Freestyle, Men (Olympic) | 17 |
