Nathan Blacklock (born 4 April 1976) is an Australian former professional rugby league and, briefly, rugby union footballer who played in the 1990s and 2000s. An Australia national rugby league representative wing, he played for the Sydney City Roosters and the St. George Dragons before they formed a joint-venture with the Illawarra Steelers to form the St. George Illawarra Dragons, with whom he continued playing, becoming the National Rugby League's top try-scorer for three consecutive seasons from 1999 to 2001. Blacklock also played in the Super League for Hull FC, with whom he won the 2005 Challenge Cup.