| Deon Oosthuysen | |
| Birth Name: | Deon Eugene Oosthuysen |
| Birth Date: | 4 December 1963 |
| Birth Place: | Vanderbijlpark, South Africa |
| Weight: | 82kg (181lb) |
| School: | Driehoek High, Vanderbijlpark |
| Position: | Wing |
| Province1: | Western Transvaal |
| Province2: | Northern Transvaal |
| Provinceyears1: | 1986–1987 |
| Provinceyears2: | 1988–1994 |
| Provinceapps1: | 16 |
| Provinceapps2: | 140 |
| Repyears1: | 1992 - 1993 |
| Repteam1: | South Africa |
| Repcaps1: | 0 |
| Reppoints1: | 20[1] |
Deon Eugene Oosthuysen (born 4 December 1963 in Vanderbijlpark, South Africa) is a former South African rugby player. He never played in a test match, but played for South Africa in 12 tour matches.
He played for Western Transvaal (now known as the Leopards) and Northern Transvaal at provincial level.[2] He was known for having a lot of pace and scored 85 tries in 140 matches for Northern Transvaal, which is, at the time of writing (2016), still a record for any Northern Transvaal/Blue Bulls player.[3] Although he originally retired from playing in 1994 due to a hip injury, he made a comeback in 1996.[4]
In addition to playing in 12 tour matches and scoring four tries for South Africa, he was also an accomplished sevens player and was for a while coach of the South African sevens team in the late 1990s.[5]