| Whaddon Niewoudt | |
| Nationality: | South African |
| Sport: | Middle-distance running |
| Event: | Steeplechase |
| Birth Date: | 6 January 1970 |
Whaddon Niewoudt (born 6 January 1970) is a South African middle-distance runner. He competed in the men's 3000 metres steeplechase at the 1992 Summer Olympics.[1] Later in his career, Niewoudt participated in road events as well; he was part of the South African team at the 2000 Chiba Ekiden marathon relay, helping the team finish in 2nd place.[2]