Sakiusa Masinivanua (Masi) Matadigo (born 8 August 1982) is a rugby union footballer who plays back row for Montpellier Hérault RC. He has been capped for the full Fiji national side, as well as representing Fiji at Sevens. Before moving to the Guinness Premiership in 2007, he had played representative rugby for Fiji Barbarians in the Pacific Rugby Cup and for Suva Highlanders in the Colonial Cup. His senior rugby career began playing for Suva suburb Nabua, as well as the full Suva F.C. side. His regular playing positions are Number eight, Flanker and Lock.