Marokau is an atoll of the Tuamotu Archipelago in French Polynesia. It lies 53 km southeast of Hikueru Atoll and it is separated by a 2 km wide sound from Ravahere, its closest neighbor in the south.
Marokau and Ravahere form a minor subgroup of the Tuamotus known as the Two Groups Islands.
Marokau Atoll is roughly triangular. The islands on its reef have a combined land area of 14.7 km². The shallow lagoon has a surface of 215.6 km².Marokau has 91 inhabitants. Most live in Vaiori, the main village, located on an island at its northern end. The locals collect copra from the numerous coconut palms planted on the islands and motus. There is another small village called Topitike in its south-eastern corner.
Coordinates -18°3'14.521" N -142°16'36.298" E