| Surname | First name | Contest | Medal |
| Butler | David | ioi92 | silver |
| Conradie | Daniel | ioi97 | silver |
| Cook | Paul | ioi99 | bronze |
| Cronje | Jaco | ioi98 | bronze |
| Guthrie | Keith Allen | ioi92 | silver |
| Hoft | Rainer | ioi99 | bronze |
| Hultquist | Carl Robert | ioi99 | silver |
| Hultquist | Carl Robert | ioi2000 | bronze |
| Lawrance | Timothy | ioi97 | bronze |
| Liu | Kevin | ioi94 | silver |
| Liu | Kevin | ioi95 | silver |
| Wright | Daniel | ioi98 | gold |
| Merry | Bruce | ioi96 | bronze |
| Merry | Bruce | ioi97 | bronze |
| Merry | Bruce | ioi98 | bronze |
| Merry | Bruce | ioi99 | silver |
| Merry | Bruce | ioi2000 | gold |
| Penzhorn | Liesl Dorothea | ioi2000 | bronze |
| Shand | Brian | ioi94 | silver |
| Van Rooyen | Gert-Jan | ioi95 | bronze |
| Van der Merwe | Hugo Jacobus | ioi2000 | bronze |