| Bayanjargalan District | |
| Native Name: | Баянжаргалан сум |
| Native Name Lang: | mn |
| Settlement Type: | District |
| Mapsize: | 220px |
| Subdivision Type: | Country |
| Subdivision Name: | Mongolia |
| Subdivision Type1: | Province |
| Subdivision Name1: | Töv Province |
| Timezone: | UTC + 8 |
| Utc Offset: | +8 |
Bayanjargalan (Mongolian: Баянжаргалан, Rich happiness) is a sum of Töv Province in Mongolia.
The district has a total area of 2,376 km2.[1]