Onna is a Local Government Area in Akwa Ibom State, Nigeria. Its name comes from an acronym of the three predominant clans that live in the area: Oniong, Nnung Ndem, and Awa.
Because of its proximity to the Atlantic Ocean, the people of Onna are predominantly fishermen.
Onna is located near large offshore oil and gas drilling operations. Both Exxon Mobil and Total S.A. have operations in the area. Their operations have caused some controversy. Local researchers found large amounts of pollution from oil spills in and around Onna.