Viliami Sikalamu "Sika" Manu (born 22 January 1987) is a former professional rugby league footballer who played as a second-row forward for Tonga and New Zealand at international level, being a member of the World Cup winning Kiwi team who beat Australia in the 2008 World Cup Final. At club level played for the Melbourne Storm, with whom he won the 2012 NRL Grand Final, and also the Penrith Panthers in the NRL and Hull F.C. in the Super League.