Motu Nao is the Marquesan name for a small rock island in the southeastern Marquesas Islands, approximately 22 km (14 mi) northeast of Fatu Hiva. The French name for the island is Rocher Thomasset, which in English is Thomasset Rock.
At low tide, the top of the island rises to 4 m (13 ft.) above sea level, and is sometimes almost awash at high tide.
Fatu-Hiva (the "H" is not pronounced, see name section below) is the southernmost island of the Marquesas Islands in French Polynesia, an overseas territory of France in the Pacific Ocean. With Motu Nao as its closest neighbour, it is also the most isolated of the inhabited islands.
Fatu Hiva is also the title of a book by explorer and archaeologist Thor Heyerdahl, in which he describes his stay on the island in the 1930s.