Nicolaas Jacobus Janse van Rensburg (born 6 May 1994) is a South African professional rugby union player, currently playing with Montpellier in the French Top 14.

As a result of the latter, he earned a call-up to the South African Schools side in 2012, where he started in two of their matches, against Wales[2] and England[3] In 2013, he was included in the Blue Bulls U19 squad for the 2013 Under-19 Provincial Championship.

[10] Janse van Rensburg made his first class debut during the 2014 Vodacom Cup competition when he played off the bench in a match against Griquas in Pretoria.

[12] Janse van Rensburg moved to France in 2016 to join Top 14 side Montpellier.

He came on as a replacement in their match in Cape Town, ending on the winning side as the South Africa 'A' team ran out 17–13 winners.