Cacho Island (Bulgarian: остров Качо, romanized: ostrov Cacho, IPA: [ˈɔstrof ˈkat͡ʃo]) is the conspicuous 750 m long (250 m in east–west direction) and 350 m wide (100 m in north-south direction) rocky island separated by a 160 m wide passage from Aktinia Beach on the southwest coast of Snow Island in the South Shetland Islands. Surface area 1.63 ha.^[1] The area was visited by early 19th century sealers.^[2]

The feature is named after the Spanish physicist, polar explorer and author Javier Cacho Gómez, participant in the 1986/87 Spanish Antarctic expedition and base commander at Juan Carlos I base in subsequent seasons, for his contribution to the promotion of Antarctica and support for the Bulgarian Antarctic programme.^[1]

Cacho Island is located at 62°49′57.4″S 61°28′35″W / 62.832611°S 61.47639°W / -62.832611; -61.47639, which is 315 m south of Rebrovo Point and 2.5 km west-northwest of Cape Conway. Bulgarian mapping in 2009.

• South Shetland Islands. Scale 1:200000 topographic map. DOS 610 Sheet W 62 60. Tolworth, UK, 1968
• L. Ivanov. Antarctica: Livingston Island and Greenwich, Robert, Snow and Smith Islands. Scale 1:120000 topographic map. Troyan: Manfred Wörner Foundation, 2010. ISBN 978-954-92032-9-5 (First edition 2009. ISBN 978-954-92032-6-4)
• Antarctic Digital Database (ADD). Scale 1:250000 topographic map of Antarctica. Scientific Committee on Antarctic Research (SCAR). Since 1993, regularly upgraded and updated

• List of Antarctic and subantarctic islands

• Cacho Island. SCAR Composite Gazetteer of Antarctica
• Bulgarian Antarctic Gazetteer. Antarctic Place-names Commission. (details in Bulgarian, basic data in English)

• Cacho Island. Adjusted Copernix satellite image

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