Temetiu, Mountain summit in Hiva Oa, French Polynesia.

Temetiu is the highest peak of Hiva ʻOa, rising to 1,269 m (4,163 ft) above the western end of Taʻa ʻOa, the Bay of Traitors. Its upper half is a triangular face covered in dense dark green vegetation, with ridges and gullies running down from a single sharp summit; the lower slopes mix dark rock, brown earth and patches of yellow-green grass.

Temetiu is the South Marquesan name of the summit above the western end of Ta'a Oa, the Bay of Traitors, on Hiva ʻOa. French sources give its height as 1,276 m, making it the highest point of the whole Marquesas archipelago, ahead of Mont Oave on Ua Pou at 1,232 m; the English Wikipedia article states 1,269 m. The bay below shelters Atuona, the island's administrative centre.

The name Temetiu is South Marquesan, and the peak rises above Ta'a Oa, the Bay of Traitors, at the western end of Hiva ʻOa. The bay below shelters Atuona, the island's administrative centre, so the summit is a fixed reference over the harbour and the valley.

Several trails lead to the summit, with local guides offering tours that provide equipment and safety support for the climb. It is wise to plan the ascent with plenty of water and proper gear, and to check conditions beforehand.

Temetiu is the highest point of the entire Marquesas archipelago, exceeding Ua Pou's Mont Oave (1,232 m). The bay below it, Ta'a Oa, is called the Bay of Traitors, and Atuona, the administrative centre of the southern Marquesas, sits at its head.