Willie Manu (born 20 March 1980) is an Australian rugby league footballer of Tongan descent who plays for St Helens of Super League. He previously played for the Wests Tigers, South Sydney Rabbitohs and St. George Illawarra Dragons in the National Rugby League as well as the Castleford Tigers and Hull FC in Super League.
In August 2008, Willie Manu was named in the Tonga training squad for the 2008 Rugby League World Cup, and in October 2008 he was named in the final 24-man Tonga squad. He played for Tonga in 2009 in a Test match against the New Zealand Kiwis.
"The Tongan Mafia"
Manu is good friends with ex Hull F.C. and fellow Tonga team mates Sam Moa and Epalahame Lauaki. The trio were commonly known by the Hull fans as 'The Tongan Mafia'.