Graham Appo (born 11 July 1974) is an Indigenous Australian former professional rugby league footballer of the 1990s and 2000s.
Appo started playing first-grade club football in the New South Wales Rugby League premiership for the Canberra Raiders in 1994, winning the club's rookie of the year award.
He then moved to the Sydney City Roosters and later the North Queensland Cowboys for a season each.
Appo embarked on a career in the English Super League after the 2000 NRL season.
Appo's best year came in 2003 when, covering at stand-off for the injured Lee Briers, he scored 23 tries for Warrington, in one game scoring a total of 34 points, which was the second-highest individual points haul for a player in Super League at the time.