| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Oboni-bulungiin dugang | city | Arhangay | Mongolia | 48.08 | 99.27 | 7086 | 149 |
| Oboonii Bulangiin Dugang | city | Arhangay | Mongolia | 48.08 | 99.27 | 7086 | 149 |
| Ochir Uaniin Dugan | city | Arhangay | Mongolia | 48.07 | 101.03 | 5869 | 149 |
| Ochir Wangiin Dugang | city | Arhangay | Mongolia | 48.07 | 101.03 | 5869 | 149 |
| Ochir-Wangiin-Dugan | city | Arhangay | Mongolia | 48.07 | 101.03 | 5869 | 149 |
| Ochirvanyin dugang | city | Arhangay | Mongolia | 48.07 | 101.03 | 5869 | 149 |
| Ochirvanyyn dugang | city | Arhangay | Mongolia | 48.07 | 101.03 | 5869 | 149 |
| Ogiy | city | Arhangay | Mongolia | 47.78 | 102.68 | 4373 | 149 |
| Ogiynuur | city | Arhangay | Mongolia | 47.65 | 102.57 | 4445 | 149 |
| Oldzeyte | city | Arhangay | Mongolia | 48.10 | 102.55 | 4268 | 149 |
| Oldziit | city | Arhangay | Mongolia | 48.10 | 102.55 | 4268 | 149 |
| Oldziyt | city | Arhangay | Mongolia | 48.54 | 101.37 | 5029 | 149 |
| Olon Turagiin Dugang | city | Arhangay | Mongolia | 48.15 | 101.23 | 5869 | 149 |
| Olon-Turagiin-Dugan | city | Arhangay | Mongolia | 48.15 | 101.23 | 5869 | 149 |
| Olon-Turugin dugang | city | Arhangay | Mongolia | 48.15 | 101.23 | 5869 | 149 |
| Ondon-Ulan | city | Arhangay | Mongolia | 48.05 | 100.51 | 6709 | 149 |
| Ondor Ulaan Suma | city | Arhangay | Mongolia | 48.05 | 100.51 | 6709 | 149 |
| Otochin Dugang | city | Arhangay | Mongolia | 48.45 | 100.28 | 6220 | 149 |
| Otochin-Dugan | city | Arhangay | Mongolia | 48.45 | 100.28 | 6220 | 149 |