Viliami Makamaile "Willie" Manu (born 20 March 1980) is a former Tonga international rugby league footballer. He played as a second-row forward, he previously played in the National Rugby League for Australian clubs the Wests Tigers, South Sydney Rabbitohs, St. George Illawarra Dragons and the Sydney Roosters. Manu moved to England and played in the Super League for the Castleford Tigers (Heritage № 854), Hull F.C. before joining St Helens (Heritage № 1200), with whom he won the 2014 Super League championship.