The Bismarck Archipelago is a group of islands off the coast of New Guinea in the southwestern Pacific Ocean, named in honour of the German chancellor Otto von Bismarck and belonging to Papua New Guinea.
The archipelago includes mostly volcanic islands, the most important of which are:
The islands were discovered by Dutch explorer Willem Schouten in 1616, but remained unsettled by Europeans until they became part of the German protectorate of German New Guinea in 1884.
The Australians seized the islands in World War I and kept a League of Nations mandate until Papua New Guinea's independence, only interrupted by Japanese occupation during World War II.