Tsushima Island (対馬, Tsushima) wani tsibiri ne na tsibirin Japan wanda ke tsakanin Tsushima Strait da Korea Strait, kusan rabin hanya tsakanin babban yankin Japan da Koriya. Babban tsibirin Tsushima ya kasance tsibiri guda ɗaya amma ya kasu kashi biyu a 1671 ta hanyar tashar Ōfunakoshiseto kuma zuwa uku a 1900 ta hanyar tashar Manzekiseto. An tura waɗannan tashoshi ta hanyar isthmus a tsakiyar tsibirin, suna ƙirƙirar "North Tsushima Island" (Kamijima) da "South Tsushima Island" (Shimojima). Tsushima kuma ya haɗa da ƙananan tsibirai sama da 100 (da yawa). Sunan Tsushima gabaɗaya yana nufin duk tsibiran tare. Tambaya: Wace shekara ce ta farko da aka raba tsibirin?
1671 da kuma