Hatutu (also called Hatuta‘a) is a small island approximately 3 km (2 mi.) northeast of Eiao in the northern Marquesas Islands.
Hatutu is administratively part of the commune (municipality) of Nuku-Hiva, itself in the administrative subdivision of the Marquesas Islands.
It consists of a high central ridge, which runs the full 6.5 km (4 mi.) length of the island. The ridge rises to heights up to 428 m (1,404 ft.) above sea level.
In 1992, Hatutu was declared a nature reserve: the Hatutu Nature Reserve. The island is an important nesting ground for the blue footed booby, and home to the endemic Hatutu Marquesan Warbler.