Lake Gura Minei (Romanian: Lacul Gura Minei) is a natural salt lake in the town of Ocna Sibiului, Sibiu County, Transylvania, Romania. It is one of the many lakes of the Ocna Sibiului mine, a large salt mine which has one of the largest salt reserves in Romania.
Literally translated from Romanian, "Lacul Gura Minei" means "the mine's mouth lake".
Lake Gura Minei was formed by the collapse of a shaft in the north of the Ignaà £iu salt mine, opened in 1780. The salt mine was abandoned in 1931 and today forms a huge underground lake with a surface of over .