Acheron Lake (Bulgarian: езеро Ахерон, romanized: ezero Aheron, IPA: [ˈɛzɛro ɐxɛˈrɔn]) is the B-shaped 315 m long in southwest-northeast direction and 186 m wide lake on President Beaches, Byers Peninsula on Livingston Island in the South Shetland Islands, Antarctica. It has a surface area of 4.4 ha, and is separated from Osogovo Bay waters by a 10 to 25 m wide strip of land. Lucifer Crags surmount the lake on the southwest.^[1] The area was visited by early 19th century sealers.^[2]

The feature is named after Acheron River in Greek underworld.^[1]

Acheron Lake is centred at 62°39′44″S 61°09′04″W / 62.66222°S 61.15111°W / -62.66222; -61.15111, which is 1 km south of Point Smellie, 1 km west-northwest of Wasp Hill and 1.9 km northeast of Devils Point.1.4 km north-northeast of Point Smellie. Detailed Spanish mapping in 1992, and Bulgarian mapping in 2009 and 2017.

• Península Byers, Isla Livingston. Mapa topográfico a escala 1:25000. Madrid: Servicio Geográfico del Ejército, 1992
• 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

• Acheron Lake. SCAR Composite Gazetteer of Antarctica
• Bulgarian Antarctic Gazetteer. Antarctic Place-names Commission. (details in Bulgarian, basic data in English)
• Management Plan for Antarctic Specially Protected Area No. 126 Byers Peninsula. Measure 4 (2016), ATCM XXXIX Final Report. Santiago, 2016

• Acheron Lake. Adjusted Copernix satellite image

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