Naiad Lake (, ) is a lake on President Beaches, Byers Peninsula on Livingston Island in the South Shetland Islands, Antarctica. The lake is roughly rectangular in shape; it is and , oriented in a south-north direction. It has a surface area of , and is separated from Osogovo Bay waters by a strip of land. The area was visited by early 19th century sealers.
The feature is named after the Naiads, nymphs of springs, streams, rivers, and lakes in Greek mythology.
Naiad Lake is situated on the southwest side of Laager Point and centred at , which is north-northeast of Point Smellie. Detailed Spanish mapping in 1992, and Bulgarian mapping in 2009 and 2017.