Barrientos Island is a small, ice-free island in the Aitcho group on the west side of English Strait in the South Shetland Islands, Antarctica. Extending 1.71 by, surface area 65 ha. The area was visited by early 19th century sealers. Barrientos Island is a popular tourist site frequented by Antarctic cruise ships. The feature was named by the Chilean Antarctic Expedition in 1949.

Location

The midpoint is located at -62.40611°N, -59.74806°W and the island is lying 280 m northwest of Cecilia Island, 4 km north-northwest of Spark Point, Greenwich Island, 1.1 km northeast of Dee Island, 1.52 km east of Sierra Island, 900 m southeast of Pasarel Island, 1.9 km south-southeast of Bilyana Island and 3.6 km south-southwest of Fort William, Robert Island (British mapping in 1968, Chilean in 1971, Argentine in 1980, and Bulgarian in 2005 and 2009).