The Long Islet, part of the Hogan Group, is a 22.85-hectare (56.5-acre) unpopulated long, narrow granite island located in northern Bass Strait, lying north of the Furneaux Group in Tasmania and south of Wilsons Promontory in Victoria, in south-eastern Australia.

Recorded breeding seabird and wader species include little penguin, short-tailed shearwater, Pacific gull, silver gull, and sooty oystercatcher. White's skink is present.

• List of islands of Tasmania