Lago Coipasa is a lake in Sabaya Province, Oruro Department, Bolivia. At an elevation of 3657 m, its surface area is 806 kmò. It is located on the western part of Altiplano, 20 km north of Salar de Uyuni and south of the main road linking Oruro and Huara (Chile).
Lake Coipasa is a tectonic saline lake with a depth of 3.5 metres that is surrounded by the Salar de Coipasa ("Coipasa Salt Flats"), and dominated by the volcanic cone of the 4,920 m high Wila Pukarani.
Thousands of flamingos have settled on the shores of Lake Coipasa.