Filogia Ian "Filo" Tiatia (born 4 June 1971 in Wellington, New Zealand) is a New Zealand international rugby union footballer, best known as a back-row forward and occasional lock for Welsh region the Ospreys. Tiatia made his debut for Wellington in 1992, playing through the advent of professionalism and then represented the Hurricanes in the Super 12 between 1996 and 2002. He then moved to Japan to play four seasons for Toyota Verblitz before signing for the Welsh region the Ospreys. In September 2016 he became head coach of Japan's Sunwolves Super Rugby side