Onehunga Mata'uiau-Esau (born 9 November 1975 in Apia) is a Samoan former rugby union player and coach.
As of April 2015, he coaches Central Queensland [1] His first international cap was during a match against Tonga, at Apia, on 13 July 1996.
He was part of 1999 Rugby World Cup roster, where he played 3 matches.
His last international cap was against Scotland, at Murrayfield, on 18 November 2000.
He also played the NPC for Hawke's Bay.