Heimaey (Icelandic pronunciation: [ˈheiːmaˌei]), literally Home Island, is an Icelandic island. At 13.4 square kilometres (5.2 sq mi), it is the largest island in the Vestmannaeyjar archipelago, and the largest and most populated island off the Icelandic coast. Heimaey is 4 nautical miles (7.4 km; 4.6 mi) off the south coast of Iceland. It is the only populated island of the Vestmannaeyjar islands, with a population of 4,500. The Vestmannaeyjar Airport and the Westman Islands Golf Club taken together cover a good portion of the island.
In January 1973, lava flow from nearby Eldfell destroyed half the town and threatened to close its harbour, its main income source. An operation to cool the advancing lava with sea water saved the harbour.