Lake Voulismeni (Greek: Λίμνη Βουλισμένη, Límni Voulisméni) is a small lake located at the centre of the town of Agios Nikolaos on the Greek island of Crete. The locals refer to it as just "the lake". The lake connects to the harbour of the town by a channel dug in 1870.
According to legend, the goddess Athena bathed in it.
Every year at midnight turning to Orthodox Christian Easter day, the majority of the population of the town gathers around the lake to celebrate with fireworks, and firecrackers thrown by the people attending that highlight event.
Local urban legend has it that the lake is bottomless. Based primarily on locals noticing disturbances at the surface of the water during the Santorini (Thera) earthquake of 1956, many assume a possible geological relation of the two locations, but no serious scientific surveys are yet known.