Ohu is a Māori word meaning 'communal work group'. Ohu may also refer to:
Õhu, a village in Lääneranna Parish, Pärnu County, in southwestern Estonia Ōu Mountains, in Japan Ohu University, a private university in Kōriyama, Japan Bayo Ohu (1964–2009), a Nigerian journalist Nestor Ohu (born 1962), a politician of the Marquesas Islands Ohu Ou (born 1992), a Chinese actor and singer ohu, the ISO 639-3 code for the Old Hungarian language Ocean heat uptake, a property to measure the amount of heat energy in the ocean