Marius Charl Joubert (born 10 July 1979 in Paarl, Western Cape) is a South African rugby union player who played as a centre for Stormers in Super Rugby. He has previously played for the Boland Cavaliers, Free State Cheetahs, ASM Clermont Auvergne and Western Province in the Currie Cup and the Stormers and the Cheetahs in Super Rugby. Joubert was educated at Paarl Gimnasium, alongside current Springboks and former Western Province and Stormers teammates De Wet Barry and Jean de Villiers. A few years later, the same school produced another current Springbok star in Schalk Burger.