Muskö is an island in the southern part of Stockholm archipelago, which forms part of Haninge Municipality, Stockholm County, Sweden. It is best known for the Muskö naval base. There are also two urban areas (tätort) on the island: Muskö and Hoppet. The island of Muskö is divided into east and west halves by the Muskö Canal, an artificial channel first dug at the beginning of the 18th century and re-excavated in the 1930s.