Omanaia (Māori: Ōmanaia) is a settlement in the Hokianga area of Northland, New Zealand.

The New Zealand Ministry for Culture and Heritage gives a translation of "place of Manaia" for Ōmanaia.

[1] In the 1830s, the Omanaia Maori chief Papahurihia led a nationalist movement to oppose the spread of Christianity through the Hokianga.

[2] Te Pīti or Ōmanaia Marae, and Te Piiti meeting house, are a meeting place for the Ngāpuhi hapū of Ngāti Hau and Ngāti Kaharau.

[3][4] In October 2020, the Government committed $493,685 from the Provincial Growth Fund for an overflow renovation of the marae, to create multipurpose space, creating 5 jobs.