| Native Name: | Баян-Өндөр 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: | Bayankhongor |
| Established Date2: | 16.891km2 |
| Unit Pref: | Imperial |
| Population As Of: | 2.559 (end of 2006) |
| Timezone: | UTC+8 |
| Coordinates: | 44.8008°N 98.6569°W |
Bayan-Öndör (Mongolian: Баян-Өндөр, Rich-High) is a sum (district) of Bayankhongor Province in southern Mongolia. In 2006, its population was 2,559.[1]