Sarel Johannes Pretorius is a South African rugby player who plays at scrum half. He currently plays for Welsh Pro12 side Newport Gwent Dragons.
From 2007–11 he played in the Currie Cup for Griquas and made his Super Rugby debut for the Cheetahs in 2009 against the Western Force. In 2010 and 2011 he played in every match and in the 2011 Super Rugby competition he equalled Bjorn Basson from the Bulls as the top tryscorer with nine tries. 2008 saw him included in the ‘Emerging Springboks’ side and in 2009 he played for the Royal XV against the touring British and Irish Lions.
Pretorius signed for the Waratahs for two years starting in 2012. After just a single season, however, he returned to the Cheetahs to play Super Rugby again for them.
In January 2015, Pretorius announced that he would join the Welsh regional team Newport Gwent Dragons at the end of the 2014–15 season.