| Dashbalbar District | |
| Native Name: | Дашбалбар сум |
| Native Name Lang: | mn |
| Settlement Type: | District |
| Pushpin Map: | Mongolia |
| Subdivision Type: | Country |
| Subdivision Name: | Mongolia |
| Subdivision Type1: | Province |
| Subdivision Name1: | Dornod Province |
| Area Total Km2: | 8,713 |
| Timezone: | UTC + 8 |
| Utc Offset: | +8 |
| Coordinates: | 49.5439°N 114.4056°W |
Dashbalbar (Mongolian: Дашбалбар) is a sum (district) of Dornod Province in eastern Mongolia. The population of the sum in 2009 was 3,246, including 1,461 in the sum center. The sum covers 8,713 km² with a population density of 0.37 people/km².[1]
Dashbalbar has a subarctic climate (Köppen climate classification Dwc) with warm summers and severely cold winters. Most precipitation falls in the summer as rain, with some snow in the spring and autumn. Winters are very dry.