Reinhardt van Rensburg (born 23 March 1992) is a South African middle-distance runner competing primarily in the 800 metres. He represented his country at the 2015 World Championships in Beijing without advancing from the first round. In addition, he won the bronze medal at the 2015 Summer Universiade. His personal best in the event is 1:45.33 set in Rio de Janeiro at the 2016 Summer Olympics.