| Olivier Klemenczak | |
| Birth Date: | 1 June 1996 |
| Birth Place: | Cormeilles-en-Parisis, France |
| Height: | 1.81 m |
| Weight: | 81 kg |
| Ru Currentteam: | Racing 92 |
| Position: | Centre |
| Amatyears1: | –2011 |
| Amatyears2: | 2011–2014 |
| Amatteam1: | AS Soustons |
| Amatteam2: | Dax |
| Years1: | 2014–2018 |
| Years2: | 2018– |
| Clubs1: | Dax |
| Clubs2: | Racing 92 |
| Apps1: | 59 |
| Apps2: | 49 |
| Points1: | 30 |
| Points2: | 40 |
| Ru Clubupdate: | 26 September 2020 |
| Repyears1: | 2015 |
| Repteam1: | France U20 |
| Repcaps1: | 2 |
| Reppoints1: | 0 |
| Ru Ntupdate: | 25 June 2015 |
Olivier Klemenczak (born 1 June 1996) is a French rugby union player who plays for Racing 92 in the Top 14 and the French national team. His position is centre.[1]