| Bass Pyramid | |
| Map: | Australia Tasmania |
| Map Relief: | 1 |
| Map Width: | 280 |
| Location: | Bass Strait |
| Coordinates: | -39.82°N 147.24°W |
| Archipelago: | Furneaux Group |
| Area M2: | 21600 |
| Length Km: | 220 |
| Width Km: | 140 |
| Country: | Australia |
| Country Admin Divisions Title: | State |
| Country Admin Divisions: | Tasmania |
| Population: | unpopulated |
The Bass Pyramid, part of the Furneaux Group, is a small, two sectioned oval, steep-sided 100m2 unpopulated granite island, located in Bass Strait, lying north of the Flinders Island and south of the Kent Group, in Tasmania, Australia. A rock bridge connects the two sections.
The island was used intermittently from the 1940s until 1988 as a bombing and shelling target by the Australian airforce and navy. On 5 April 1978 the island was proclaimed part of a nature reserve.
Recorded breeding seabird and wader species include fairy prion, common diving-petrel, Pacific gull, silver gull, Australasian gannet and sooty oystercatcher. It is also a haul-out site for Australian fur seals.[1] The seals were hunted here in the 19th century.[2] The dangers of the site resulted in at least three sealers losing their lives here.[3]