Kilifarevo Island (Bulgarian: остров Килифарево, ‘Ostrov Kilifarevo’ 'os-trov ki-li-'fa-re-vo) is an ice-free island in the Aitcho group on the west side of English Strait in the South Shetland Islands, Antarctica. The island is situated 850 m (930 yd) northwest of Jorge Island, 460 m (500 yd) north of Riksa Islands and 350 m (380 yd) southeast of Morris Rock. Extending 640 by 350 m (700 by 380 yd), surface area 11 hectares (27 acres). The area was visited by early 19th century sealers. Kilifarevo Island is named after the town of Kilifarevo in northern Bulgaria.