Oruanui (Māori: Ōruanui) is a rural community in the Taupō District and Waikato region of New Zealand's North Island, located northwest of Wairakei on State Highway 1.

[2] The New Zealand Ministry for Culture and Heritage gives a translation of "place of many pits" for Ōruanui.

[3] The local Ōruanui Marae is a meeting place of the Ngāti Tūwharetoa hapū of Ngāti Te Rangiita and Te Kapa o Te Rangiita.

[4] Oruanui is in two SA1 statistical areas which cover 18.58 km2 (7.17 sq mi).

Although some people chose not to answer the census's question about religious affiliation, 65.6% had no religion, 27.0% were Christian and 1.6% had other religions.