Tiaan Pretorius (born 19 February 2001) is a South African rugby union player.

He plays for the South Africa national rugby sevens team.

He played for Paul Roos Gymnasium and represented Western Province and SA Schools.

He received his first call up to the South Africa national rugby sevens team in Dubai in 2021.

[3] After missing some time through injury,[4] he was recalled back into the South African sevens team in December 2023.