Ruissalo (Finnish; Runsala in Swedish) is an island in the Archipelago Sea and a district of the city of Turku, Finland. The island is located to the south-west of the city, between Hirvensalo and Pansio in the mainland. It is rather sparsely populated, having a population of only 126 (as of 2004[update]), with an annual growth rate of 3.97%. One of the largest old oak forests in Finland is situated in the island and many parts of it are included in nature conservation programs.
In the westernmost part of the island there is a spa and a camping area. Turku golf course is situated also here. The Botanical garden of University of Turku is situated in the middle of the island. Near the southern tip of the western part of the island is a small, unofficial nude beach. Official nude beaches in Finland can only be found in Helsinki and in Pori.