Harold William Vorster is a South African rugby union player for the Bulls in the United Rugby Championship and the Blue Bulls in the Currie Cup.

He represented Limpopo Blue Bulls at various youth levels, from the Under-13 Craven Week in 2006 to the Under-18 Craven Week in 2011.

He was included in the training group that toured Argentina in preparation for the 2013 IRB Junior World Championship.

[2] He joined the Golden Lions in 2012, making his provincial first class debut in their Vodacom Cup match against Leopards.

He made his run-on debut for the Lions against the Stormers on 28 February 2015 at Ellispark.