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.

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, 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.