| Lake Tsagan-Khak | |
| Location: | Republic of Kalmykia |
| Coordinates: | 46.0014°N 44.0247°W |
| Pushpin Map: | Russia |
| Pushpin Map Alt: | Location of Lake Tsagan-Khak in Russia. |
Tsagan-Khak Lake is located in the Russian Republic of Kalmykia. It is the third-largest lake in the republic (19,9 km²). Several industries are attached to the lake, including fishing, textiles, and plastics manufacturing. The lake is well known throughout southern Russia for its nude beaches.