Siren Lake (, ) is the oval-shaped 250 m long in southeast-northwest direction and 140 m wide lake near the west extremity of South Beaches on Byers Peninsula, Livingston Island in the South Shetland Islands, Antarctica. It has a surface area of 2.7 ha and is separated from Raskuporis Cove waters by a 55 to 70 m wide strip of land. The area was visited by early 19th century sealers.
The feature is named after the Siren nymphs of Greek mythology.
Siren Lake is centred at , which is 1.8 km east of Devils Point, 800 m east-southeast of Lucifer Crags, 1 km southwest of Wasp Hill and 680 m north of Sevar Point. Detailed Spanish mapping in 1992, and Bulgarian mapping in 2009 and 2017.