| Birth Date: | 19 November 1916 |
| Death Date: | 13 September 2000 (aged 83) |
| Death Place: | Howick, KwaZulu-Natal, South Africa |
| Sport: | Rowing |
| Show-Medals: | yes |
Ian Robert George Stephen (19 November 1916 – 13 September 2000) was a South African rower who mostly competed in single sculls. He won a bronze medal at the 1950 British Empire Games and competed at the 1948 and 1952 Summer Olympics, finishing fifth in 1952.