| Taatsiin Tsagaan Lake | |
| Pushpin Map: | Mongolia |
| Location: | Övörkhangai, Mongolia |
| Coords: | 45.1588°N 101.4706°W |
| Basin Countries: | Mongolia |
| Length: | 24km (15miles) |
| Width: | 11km (07miles) |
| Area: | 252km2 |
| Depth: | 9.3m (30.5feet) |
| Max-Depth: | 16m (52feet) |
| Elevation: | 1312m (4,304feet) |
Taatsiin Tsagaan Lake (Mongolian: Таацын Цагаан Нуур, Taatsiin Tsagaan Nuur, Chinese: 塔茨查干湖) is a large saline lake in Övörkhangai Province in the Gobi Desert of southern Mongolia.
and the nearby Böön Tsagaan Lake, Adgiin Tsagaan Lake, and Orog Lake, are collectively designated a Ramsar wetland of international importance under the name "Valley of the Lakes". These lakes are known to be an important staging area for migratory waterfowl, and it has been suggested that they might be a breeding area for the rare Relict Gull.[1] The lake has been designated an Important Bird Area by BirdLife International.