| Intro | Modern pentathlete |
| Was |
Athlete Modern pentathlete Pentathlete |
| From | South Africa |
| Type | Sports |
| Gender | male |
| Birth | 28 November 1933, Douglas, South Africa |
| Death |
17 May 1987, Pretoria, South Africa (aged 53 years) |
| Star sign | Sagittarius |
Okkie van Greunen (28 November 1933 – 17 May 1987) was a South African modern pentathlete. He competed at the 1956 and 1960 Summer Olympics.