Fetu'u Moana Vainikolo (born 30 January 1985 in Tofoa, Tonga) is a Tongan Rugby Union player. Noted for his explosive ball-carrying ability, he represented the Highlanders in the Super 14 competition between 2008 and 2010. In season 2011-12 Vainikolo moved to Galway, Ireland side Connacht Rugby. He left at the end of his 2-year contract in the summer of 2013 to join English Aviva Premiership side Exeter Chiefs on a two-year deal.