Biak is the main island of Biak Archipelago located in Cenderawasih Bay near the northern coast of Papua, an Indonesian province, and is just northwest of New Guinea. Biak has many atolls, reefs, and corals.

The Biak Islands are an island group of Papua province, eastern Indonesia in the Cenderawasih Bay 50 km off the north-western coast of the island of New Guinea. The group consists of the main islands of Biak, Supiori and Numfor, and numerous smaller islands, mostly covered in rain forest. The population of the archipelago is about 130,000.