Anjouan ([ɑ̃.ʒu.ɑ̃]) is an autonomous high island in the Comoro Islands in the southwestern Indian Ocean, part of the Union of the Comoros. It is known in Shikomori as Ndzuani, Ndzuwani or Nzwani, and, until the early twentieth century when the name fell out of general use (although still sometimes used by English-speakers in Zanzibar), in English as Johanna. Historically it was also called Hinzuan. Its chief town is Mutsamudu and, as of 2006[update], its population is around 277,500. The total area of the island is 424 square kilometers (163 square miles).
