Rex Albert Wilson (born April 10, 1960 in Wanganui, Manawatu-Wanganui) is a retired male long-distance runner from New Zealand, who represented his native country at the 1992 Summer Olympics in Barcelona, Spain. There he finished in 16th place in the men's marathon, clocking 2:15:51. He set his personal best (2:10:48) in the classic distance in 1990.