| Cliven Loubser | |
| Fullname: | Cliven Sven James Loubser |
| Birth Date: | 24 February 1997 |
| Birth Place: | Rehoboth, Namibia |
| School: | Windhoek Gymnasium |
| Position: | Fly-half |
| Currentclub: | Anthem Rugby Carolina |
| Youthyears1: | 2016 |
| Youthyears2: | 2017 |
| Youthyears3: | 2018 |
| Amatyears1: | 2019–2020 |
| Amatteam1: | Wanderers F.C. |
| Amatyears2: | 2019–2020 |
| Amatteam2: | Welwitschias |
| Amatapps2: | 14 |
| Amatpoints2: | 41 |
| Years1: | 2020 |
| Clubs1: | Yorkshire Carnegie |
| Apps1: | 1 |
| Points1: | 0 |
| Years2: | 2021–2023 |
| Clubs2: | Utah Warriors |
| Apps2: | 27 |
| Points2: | 96 |
| Years3: | 2024 |
| Clubs3: | Anthem Rugby Carolina |
| Apps3: | 0 |
| Points3: | 0 |
| Repyears1: | 2017–present |
| Repcaps1: | 26 |
| Reppoints1: | 240 |
| Clubupdate: | 4 February 2024 |
| Repupdate: | 16 July 2023 |
Cliven Sven James Loubser (born 24 February 1997) is a Namibian rugby union player, who currently plays for in Major League Rugby (MLR).[1] He represents internationally. His regular position is fly-half.
Loubser previously played for Yorkshire Carnegie in the RFU Championship[2] and Utah Warriors (MLR).[3]
Loubser was born in Rehoboth. He made his test debut for in 2017 against .