| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| O-la-men-ch'in | city | Heilongjiang | China | 47.64 | 124.09 | 830 | 8993 |
| O-la-men-ch’in | city | Heilongjiang | China | 47.64 | 124.09 | 830 | 8993 |
| O-lai-mi | city | Heilongjiang | China | 47.29 | 131.86 | 193 | 68212 |
| O-mu-erh-ho | city | Heilongjiang | China | 53.28 | 123.85 | 967 | 447 |
| O-mu-erh-ho-chan | city | Heilongjiang | China | 53.28 | 123.85 | 967 | 447 |
| Oupu | city | Heilongjiang | China | 52.38 | 125.92 | 849 | 149 |