Southern Island or Southern Islands may refer to
Locations Southern Islands, an area in central, Singapore Southern Islands Constituency, a former election constituency located in the above area Yuzhny Island (), an island in Russia Ryukyu Islands, called by The folklorist Kunio Yanagita and his followers
Other , a British cargo ship in service from 1947 to 1951 Southern Islands (GPU family), a GPU family Southern Islands (Pokémon Trading Card Game), a set of Pokémon Trading Cards
See also South Island Southern Isles