Tambra Island (Bulgarian: остров Тъмбра, romanized: ostrov Tambra, IPA: [ˈɔstrof ˈtɤmbrɐ]) is a mostly ice-covered island in the Pitt group of Biscoe Islands, Antarctica.

The feature is 1.17 km long in southwest–northeast direction and 700 m wide, and is separated from the adjacent Jingle Island to the northeast by a 60 m wide passage.

The island is named after Tambra Hill in Southern Bulgaria.

This article includes information from the Antarctic Place-names Commission of Bulgaria which is used with permission.

This Biscoe Islands location article is a stub.