Jonathan Barry Janse van Rensburg (born 27 February 1989 in Pietermaritzburg, South Africa) is a South African rugby union player for Slava Moscow in the Russian Rugby Premier League. His regular position is number eight.
Janse van Rensburg played rugby for Pretoria-based university side between 2011 and 2014.
He was also included in the squad for the 2012 Currie Cup Premier Division competition, but failed to make any appearances for the Blue Bulls.
In 2015, Janse van Rensburg moved to Kimberley to join . After being an unused substitute in their opening match of the 2015 Vodacom Cup season against the in Port Elizabeth, he made his first class debut in their next match, a 19âÂÂ12 victory over the in George. He made his first senior start in their next match against the in Hartswater and also scored one try for Griquas during the season, in a 27âÂÂ24 victory over a in Round Six of the competition. He helped Griquas finish second on the log to qualify for the quarter-finals, where they lost 14âÂÂ28 to eventual champions the .
He made four appearances off the bench for Griquas in the 2015 Currie Cup qualification tournament, contributing two tries â one in a 48âÂÂ17 win over the and the other in a 57âÂÂ33 win over the â to help Griquas finish top of the log to earn a place in the 2015 Currie Cup Premier Division competition.