| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| O-la-men-ch'in | city | Heilongjiang Sheng | China | 47.635 | 124.0911111 | 442 | 26967 |
| O-lai-mi | city | Heilongjiang Sheng | China | 47.2866667 | 131.86 | 193 | 5514 |
| O-mu-erh-ho | city | Heilongjiang Sheng | China | 53.2833333 | 123.85 | 967 | 439 |
| O-mu-erh-ho-chan | city | Heilongjiang Sheng | China | 53.2833333 | 123.85 | 967 | 439 |
| Oroin Xibe | city | Heilongjiang Sheng | China | 46.3166667 | 124.2333333 | 410 | 4327 |
| Ou-p'u-hsien | city | Heilongjiang Sheng | China | 52.7833333 | 126.0166667 | 715 | 245 |
| Oupu | city | Heilongjiang Sheng | China | 52.3833333 | 125.9166667 | 849 | 299 |
| Oupu | city | Heilongjiang Sheng | China | 52.7833333 | 126.0166667 | 715 | 245 |
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