Sangay Wangchuk (born 1983) is a Bhutanese long-distance runner who set a national record in the men's marathon at the 2009 World Championships in Athletics on August 22, 2009. Wangchuk's time of 2:47:55 broke the previous best of 3:00:17 set by on November 13, 2002 in Thimphu. Bhutan Today reported that Wangchuk, a member of Royal Bhutan Army, turned in a time of 2:52 at the Third Coronation Marathon in Wangdue Phodrang on May 23, 2010 but finished second to (2:44:21).