Dolphin Island may refer to:

Places Dolphin Island (Western Australia), Australia Dolphin Island (Nunavut), Canada Dolphin Island (Fiji) Dolphin Island, a popular name for Il Gallo Lungo, a dolphin-shaped island in the Italian archipelago of Sirenuse Dolphin Island (Jamaica), off Jamaica Dolphin Island, an outlying peak of the Hogup Mountains, Utah, U.S. Dolphin Island (Vanuatu)

Other uses Dolphin Island (film), a 2021 family film Dolphin Island (novel), by Arthur C. Clarke, 1963 Dolphin Island: Underwater Adventures, a 2009 video game Dolphin Island (Iruka Jima), Japan, a dolphinarium Dolphin Island, an attraction at Resorts World Sentosa, Singapore

See also Dauphin Island, Alabama, a town in the U.S. Dolphin (disambiguation)