Ruan Vermaak

Ruan Stefan Vermaak (born 1 May 1998) is a South African rugby union player for the in Super Rugby and the  in the Rugby Challenge His regular position is lock, flank or number eight.

He represented South Africa at youth level, playing for the South Africa Schools 'A' team in the Under-19 International Series in 2015 and 2016 and for the South Africa Under-20 team at the 2018 World Rugby Under 20 Championship.

He made his Super Rugby debut for the in February 2019, coming on as a replacement in their 25–16 victory over the  in Buenos Aires.