Apataki is a coral atoll in the South Pacific Ocean, territorially part of French Polynesia. It is one of the Palliser Islands, a subgroup of the Tuamotu Archipelago. Apataki is located approximately northeast of the island of Tahiti, east of Arutua and northeast of Kaukura. The island is approximately rectangular; it is long and wide. It has a total area of approximately 706 km with a land area of approximately . Its wide lagoon has two navigable passes to enter it.
, Apataki Atoll has 350 inhabitants, down from 492 in 2007. The main village is called Niutahi.