Swan Island, part of the Waterhouse Island Group, is a 239ha granite island situated in Banks Strait, part of Bass Strait, lying close to the north-eastern coast of Tasmania, Australia. Part of the island is privately owned and it contains an automated lighthouse, several houses and an airstrip. It has previously been subject to grazing by livestock. Several shipwrecks have been recorded here of vessels passing through Banks Strait; Brenda Mystery Union (1852). Other islands in the Waterhouse Group include the Ninth, Tenth, Waterhouse, Little Waterhouse, Maclean, Baynes, Cygnet, Foster, Little Swan, Bird Rock, George Rocks, St Helens, and Paddys islands.