Roy "Reg" Park (7 June 1928 – 22 November 2007) was an English bodybuilder, businessman, and actor. His first title was Mr Britain in 1949. He then won the Mr Universe in 1951, 1958 and 1965. He also starred in five films, four featured as Hercules, and in one, Hercules in the Haunted World (1961), he co-starred with Christopher Lee. Besides his own career and titles, he is probably best known as an idol and mentor to Arnold Schwarzenegger.