Karel Thomas van Vollenhoven (29 April 1935 – 21 October 2017) was a South African rugby league and rugby union footballer who played in the 1950s and 1960s. He enjoyed a prolific rugby league career with English club St. Helens after switching codes from rugby union in the 1950s. Van Vollenhoven became a rugby league sensation with the club in a career spanning ten seasons from the 1957 to the 1967–68 season. During this time he amassed a club record 392 tries in 408 appearances. This includes a record 62-tries scored during the 1958–59 season. In 2000, he was inducted into the Rugby League Hall of Fame.