"Pitcairn" redirects here. For the ship, see HMS Pitcairn (K589). For the play by Richard Bean, see Pitcairn (play).The Pitcairn Islands (/ˈpɪtkɛərn/; Pitkern: Pitkern Ailen), officially named the Pitcairn Group of Islands, are a group of four volcanic islands in the southern Pacific Ocean that form the last British Overseas Territory in the Pacific.