Bayan-Öndör (Mongolian: Баян-Өндөр) is a sum (district) of Bayankhongor Province in southern Mongolia. Coordinates:
| Sums of Bayankhongor | |
|---|---|
| Baatsagaan | Bayan-Ovoo | Bayan-Öndör | Bayanbulag | Bayangovi | Bayankhongor | Bayanlig | Bayantsagaan | Bogd | Bömbögör | Buutsagaan | Erdenetsogt | Galuut | Gurvanbulag | Jargalant | Jinst | Khüreemaral | Ölziit | Shinejinst | Zag | |


