Kuusisto (Finnish: Kuusisto; Swedish: Kustö) is an island and former municipality in Kaarina, Finland. The island is about 12 km long and 2 km wide. Its main attraction is Kuusisto Castle.
Villages within Kuusisto are as follows:
Empo (Ämboda), Finby, Isokylä (Storby), Joensuu (Åminne), Jullas, Järvenkylä (Träskby), Korsnainen (Korsnäs), Kalliola (Krogsby), Kylliäinen, Kerromi (Kärrom), Munkke (Munkäng), Rävnäs (Räfnäs) and Vuolahti.
Coordinates: 60°23′15″N 22°24′01″E / 60.387398°N 22.400322°E
A bridge to Rövarholmen island in the southwest corner of Kuusisto island
A Yle television and radio broadcasting tower run by Digita Oy, in the southwest corner of Kuusisto island. A horse stable can be seen within the foreground.