thumb|Duck on the lake
Lake Kournas is a lake on the island of Crete, Greece, near the village of Kournas. It is in the Apokoronas municipality of Chania regional unit close to the border with Rethymno regional unit, 47 km from the town of Chania. Kournas is a fairly large village perched on a hill overlooking the lake.
thumb|left|[[Traffic sign|Road sign]]
Crete's only freshwater lake, Lake Kournas, is relatively large, with a perimeter of 3.5 km. There is a nature preserve on the Southwest side of the lake.