Cona, also Cuona Lake or Tsonag Lake (simplified Chinese: 错那湖; traditional Chinese: 錯那湖; pinyin: Cuònà Hú), is a major lake of northern Tibet Autonomous Region, China.

[1] The smaller Ganong Lake lies almost adjacent to the southeast.

Its area is approximately 300 square kilometres (120 sq mi), and it is at 4,594 metres (15,072 ft) above sea level making it one of the world's higher freshwater lakes.

The lake is the source of the Gyalmo Nagqu, the headwater of the Salween River.

This Nagqu Prefecture, Tibet location article is a stub.