| Tsagaannuur District | |
| Native Name: | Цагааннуур сум |
| Native Name Lang: | mn |
| Settlement Type: | District |
| Pushpin Map: | Mongolia |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location in Mongolia |
| Subdivision Type: | Country |
| Subdivision Name: | Mongolia |
| Subdivision Type1: | Province |
| Subdivision Name1: | Bayan-Ölgii |
| Unit Pref: | Imperial |
| Population As Of: | 2014 |
| Population Total: | 1436 |
| Timezone: | UTC+7 |
| Coordinates: | 49.5069°N 89.7314°W |
Tsagaannuur (Mongolian: Цагааннуур, white lake) is a sum (district) of Bayan-Ölgii Province in western Mongolia. It is primarily inhabited by ethnic Kazakhs. As of 2014 it had a population of 1436 people.[1]
The administrative center of the Tsagaannuur sum is the starting point of a road to Russia, which is an important trade connection for the region and the Aimag capital Ölgii.
The Tsagaan Nuur Free Economic Zone was established in November 2005 to catalyze the development of the western region of Mongolia. The Free Economic Zone is about 708.4 hectares in size and is on flat land covered with pebble and rocky soil. Two rivers flowing by on the west and north sides of the Free Economic Zone form the water supplies for the zone.[2] The Tsagaan Nuur Free Economic Zone has been granted the following special free trade features: