Jaco van der Westhuyzen (born 6 April 1978) is a South African former professional rugby union footballer who played fly-half or fullback.
He was unable to cement himself a place in the starting line-up, and moved north to the Mpumalanga Pumas where he came under the eye of ex-Springbok centre Danie Gerber.
Van der Westhuyzen was first capped for the Springboks in the 2000 Tri Nations tournament against New Zealand as a replacement, but a knee injury after his first two tests curtailed his international career.
He scored his debut international try against Samoa in Brisbane in the 2003 Rugby World Cup, after he was called into the South African squad as a late replacement.
In 2006, van der Westhuyzen was part of the Springboks side that was thrashed 49–0 by the Wallabies, in their opening Tri Nations match.