| Bayankhangai District | |
| Native Name: | Баянхангай сум |
| Native Name Lang: | mn |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: | Mongolia |
| Subdivision Type1: | Province |
| Subdivision Name1: | Töv Province |
| Timezone: | UTC + 8 |
| Utc Offset: | +8 |
Bayankhangai (Mongolian: Баянхангай, Rich Khangai) is a sum of Töv Province in Mongolia. Khangai (Mongolian: Хангай) provident lord, munificent king, generous gracious lord or bountiful king