| Birth Name: | Onehunga Mata'uiau-Esau |
| Birth Date: | 1975 11, df=yes |
| Birth Place: | Apia, Samoa |
| Weight: | 212 lb |
| Ru Position: | Hooker |
| Years1: | 1996-2000 |
| Clubs1: | Waitemata |
| Ru Provinceyears1: | 2000 |
| Ru Province1: | Hawkes Bay |
| Apps1: | 10 |
| Points1: | 10 |
| Repyears1: | 1996–2000 |
| Repcaps1: | 9 |
| Reppoints1: | 0 |
Onehunga Mata'uiau-Esau (born 9 November 1975 in Apia) is a Samoan former rugby union player and coach. He played as a hooker. 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.