Martin Dirk Muller (born 23 March 1988) is a retired South African rugby union player, played with Hong Kong Premiership side Valley RFC.
He represented Western Province at youth level and made his debut for them during the 2009 Vodacom Cup, coming on as a substitute in their match against the Mighty Elephants.
He joined the Free State Cheetahs at the start of 2013, but suffered a groin injury[3] and never made an appearance for them.
After it was initially announced that he would join Welsh team Newport Gwent Dragons for 2013–14,[4] the deal fell through and he linked up with the Golden Lions prior to the 2013 Currie Cup Premier Division instead.
[5] He didn't recover from injury to feature for them in 2013, but he did make his debut for the Golden Lions in the 2014 Vodacom Cup.