The Isabella Island, part of the Big Green Group within the Furneaux Group, is a 11.4-hectare (28-acre) unpopulated granite island, located in the Bass Strait, west of the Flinders Island and south of Chalky Island, in Tasmania, in south-eastern Australia. The island is a nature reserve and is part of the Chalky, Big Green and Badger Island Groups Important Bird Area.
|Archipelago||Big Green Group, part of the Furneaux Group|
|Area||11.4 ha (28 acres)|
Recorded breeding seabird and wader species are little penguin, Pacific gull, sooty oystercatcher and pied oystercatcher. Cape Barren geese also breed there. Reptiles present include the metallic skink, White's skink and white-lipped snake.
- "Isabella Island (TAS)". Gazetteer of Australia online. Geoscience Australia, Australian Government.
- Brothers, Nigel; Pemberton, David; Pryor, Helen; & Halley, Vanessa. (2001). Tasmania’s Offshore Islands: seabirds and other natural features. Tasmanian Museum and Art Gallery: Hobart. ISBN 0-7246-4816-X
- "IBA: Chalky, Big Green and Badger Island Groups". Birdata. Birds Australia. Archived from the original on 6 July 2011. Retrieved 14 June 2011.