Zavala Island (, ) is an ice-free island in the Dunbar group off the northwest coast of Varna Peninsula on Livingston Island in the South Shetland Islands, Antarctica. It is extending , with surface area . The area was visited by early 19th-century sealers.
The island is named after the settlement of Zavala and the Zavala Mountain in western Bulgaria.
Zavala Island is located at , east-northeast of Balsha Island, southwest of Aspis Island, north of Slab Point, and west of Organpipe Point. Bulgarian topographic survey by the Tangra 2004/05 expedition. British mapping in 1968, Chilean in 1971, Argentine in 1980, and Bulgarian in 2005 and 2009.