| Ruan Nortjé | |
| Birth Date: | 25 July 1998 |
| Birth Place: | Pretoria, South Africa |
| School: | Die Hoërskool Wonderboom |
| Relatives: | Linda Nortje (spouse) |
| Position: | Lock |
| Currentclub: | / |
| Youthyears1: | 2016–2019 |
| Years1: | 2018–2019 |
| Apps1: | 8 |
| Points1: | 0 |
| Years2: | 2018– |
| Apps2: | 40 |
| Points2: | 20 |
| Years3: | 2018–present |
| Apps3: | 30 |
| Points3: | 5 |
| Repyears1: | 2018 |
| Repteam1: | South Africa Under-20 |
| Repcaps1: | 5 |
| Reppoints1: | 10 |
| Repyears2: | 2022– |
| Repteam2: | South Africa |
| Repcaps2: | 6 |
| Reppoints2: | 0 |
| Clubupdate: | 31 August 2024 |
| Repupdate: | 31 August 2024 |
Ruan Nortjé (born 25 July 1998) is a South African professional rugby union who currently plays for the in the United Rugby Championship, in the Currie Cup and the in the Rugby Challenge. His regular position is lock.
Nortjé grew up in Pretoria and represented his local at the Under-18 Academy Week in 2016. He joined the Blue Bulls academy after school, and played for their Under-19 team in 2017.[1]
In 2018, Nortjé was included in the South Africa Under-20 squad for the 2018 World Rugby Under 20 Championship.[2] He played in all three of their matches during the pool stage – a 33–27 victory over Georgia,[3] a 30–17 win over Ireland[4] and a 29–46 defeat to France.[5] South Africa qualified for the semi-finals as the runner-up with the best record, but fell short in the semifinal against England, losing 31–32, with Nortjé scoring one of South Africa's tries.[6] He scored another try in their third-place play-off against New Zealand, helping his side to a 40–30 win.[7]
Upon his return to South Africa, he was included in the squad for their final match of the 2018 Super Rugby season against trans-Jukskei rivals the,[8] and he made his Super Rugby debut by coming on as a second half replacement.[9]