Opitsvet Lake (Bulgarian: езеро Опицвет, romanized: ezero Opitsvet, IPA: [ˈɛzɛro oˈpit͡svɛt]) is the lake extending 420 m in west–east direction and 410 m in north–south direction on the southeast coast of Rozhen Peninsula, Livingston Island in the South Shetland Islands, Antarctica. It has a surface area of 11 ha and is separated from the waters of Brunow Bay on the east and Bransfield Strait on the south by a 70 to 150 m wide strip of land.^[1] The area was visited by early 19th century sealers.^[2]

The feature is named after the settlement of Opitsvet and the eponymous marsh in Western Bulgaria.^[1]

Opitsvet Lake is situated at the base of Samuel Point and centred at 62°43′37″S 60°09′12″W / 62.72694°S 60.15333°W / -62.72694; -60.15333, which is 600 m east of Needle Peak and 2.78 km southwest of Vazov Point. Bulgarian mapping of the area in 2009 and 2017.

• L. Ivanov. Antarctica: Livingston Island and Greenwich, Robert, Snow and Smith Islands. Scale 1:120000 topographic map. Troyan: Manfred Wörner Foundation, 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

• Antarctic lakes
• Livingston Island

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

• Opitsvet Lake. Adjusted Copernix satellite image

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