| Honorific-Prefix: | Ariki |
| Tāreha Te Moananui | |
| Honorific-Suffix: | MP |
| Constituency Mp: | Eastern Maori |
| Parliament: | New Zealand |
| Term Start: | 1868 |
| Term End: | 1870 |
| Predecessor: | New constituency |
| Successor: | Karaitiana Takamoana |
| Birth Date: | 1800–1810 |
| Birth Place: | Ahuriri |
| Spouse: | Mere Te Huia Te Apatari |
| Children: | Te Roera Tareha & Kurupo |
| Residence: | Pā Whakairo |
| Profession: | Paramount Chief & Political Leader |
| Religion: | Te Hāhi Mihinare |
| Allegiance: | Ngāti Kahungunu |
| Battles: | New Zealand Wars |
| Tāreha Te Moananui | |
| Paramount Chief of Heretaunga | |
| Predecessor: | Te Moananui |
| Successor: | Rēnata Kawepō |
| Birth Name: | Tāreha |
| House: | Rangikamangungu |
| Father: | Oneone |
| Mother: | Hamene |
| Moretext1: | Head of the House of Rangikamangungu |
Tāreha Te Moananui (died 19 December 1880) was a Paramount Chief of the Ngāti Kahungunu iwi, and a Māori member of Parliament in New Zealand from 1868 to 1870.
Born between 1800 and 1810, Tāreha was the son of the great Chief Oneone of Ngāti Rangikamangungu and Hāmene of Ngāi Tūhoe.[1] He received the paramountcy and name of Te Moananui following the death of Ngāti Kahungunu leader Kurupō Te Moananui in 1861.
Tāreha was known as 'Te Mokopuna a Tangaroa', this is due to his families close descent and association with Pania and the Ponaturi tribe who live in the sea. Because of this the ancestral Wharenui at Waiohiki is called Hau Te Ana Nui, which is also the name of his ancestor Tangaroa's house in the ocean.
Tāreha was one of four Māori elected in 1868 for the new Māori electorates in the New Zealand Parliament, and he was the first of the four to speak in Parliament. He represented the electorate of Eastern Maori from 1868 to 1870, when he retired.[2]
He died on 19 December 1880, and his tangi and funeral took place at Waiohiki, near Taradale.[3] He had two surviving children, sons Te Roera Tāreha (1850s–1941) and Kurupō Tāreha (1871–1938).