Orsini Rock (Bulgarian: скала Орсини, romanized: skala Orsini, IPA: [skɐˈla orˈsini]) is the rock off the north coast of Livingston Island in the South Shetland Islands, Antarctica 90 m long in west–east direction and 46 m wide, with a surface area of 0.42 ha. The vicinity was visited by early 19th century sealers.^[1]

The feature is named after Latino Orsini (c. 1530–1580), an Italian politician and military who invented the surveying instrument radio latino; in association with other names in the area deriving from the early development or use of geodetic instruments and methods.

Orsini Rock is located in Barclay Bay at 62°35′17.3″S 60°59′03″W / 62.588139°S 60.98417°W / -62.588139; -60.98417,^[2] which is 2.44 km northwest of Bilyar Point, 3.94 km northeast of Lair Point and 7.25 km east-southeast of Window Island. Bulgarian mapping in 2009 and 2017.

• List of Antarctic and subantarctic islands

• Livingston Island to King George Island. Scale 1:200000. Admiralty Nautical Chart 1776. Taunton: UK Hydrographic Office, 1968
• South Shetland Islands. Scale 1:200000 topographic map No. 3373. DOS 610 - W 62 58. 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)
• L. Ivanov. Antarctica: Livingston Island and Smith Island. Scale 1:100000 topographic map. Manfred Wörner Foundation, 2017. ISBN 978-619-90008-3-0
• Antarctic Digital Database (ADD). Scale 1:250000 topographic map of Antarctica. Scientific Committee on Antarctic Research (SCAR). Since 1993, regularly upgraded and updated

• Bulgarian Antarctic Gazetteer. Antarctic Place-names Commission. (details in Bulgarian, basic data in English)

• Orsini Rock. Adjusted Copernix satellite image

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