The Ōnawe Peninsula is a volcanic plug inside Akaroa Harbour, on Banks Peninsula in Canterbury, New Zealand.

It was the site of a Ngāi Tahu pā captured by Te Rauparaha, chief of the Ngāti Toa in 1831. Up to 1,200 people were killed here, and the land is sacred to Ngāi Tahu so "is deemed to be vested in Te Runanga o Ngāi Tahu" as part of the Ngāi Tahu Waitangi claims settlement in 1998.