| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Oi-ri | city | Korea, Dem. Peoples Rep. of (North) | 38.97 | 125.38 | 95 | 54117 | |
| Oibang | city | Hamnam | Korea, Dem. Peoples Rep. of (North) | 40.31 | 128.33 | 1899 | 5811 |
| Oikkot | city | P'yongbuk | Korea, Dem. Peoples Rep. of (North) | 39.58 | 125.34 | 13 | 27085 |
| Oil | city | Chagang | Korea, Dem. Peoples Rep. of (North) | 40.98 | 126.80 | 2604 | 7599 |
| Oil | city | Chagang | Korea, Dem. Peoples Rep. of (North) | 40.98 | 126.80 | 2509 | 7599 |
| Oil-li | city | Yanggang | Korea, Dem. Peoples Rep. of (North) | 41.28 | 128.31 | 3349 | 20294 |
| Oil-li | city | Hamnam | Korea, Dem. Peoples Rep. of (North) | 40.18 | 128.60 | 0 | 16512 |
| Oil-lodongjagu | city | Chagang | Korea, Dem. Peoples Rep. of (North) | 40.98 | 126.80 | 2604 | 7599 |
| Oil-lodongjagu | city | Yanggang | Korea, Dem. Peoples Rep. of (North) | 41.28 | 128.31 | 3349 | 20294 |
| Oil-nodongjagu | city | Chagang | Korea, Dem. Peoples Rep. of (North) | 40.98 | 126.80 | 2604 | 7599 |
| Oil-rodongjagu | city | Yanggang | Korea, Dem. Peoples Rep. of (North) | 41.28 | 128.31 | 3349 | 20294 |
| Oil-rodongjagu | city | Chagang | Korea, Dem. Peoples Rep. of (North) | 40.98 | 126.80 | 2604 | 7599 |
| Oime | city | Hwangnam | Korea, Dem. Peoples Rep. of (North) | 38.18 | 125.87 | 830 | 17113 |
| Oin-gol | city | P'yongnam | Korea, Dem. Peoples Rep. of (North) | 39.52 | 126.45 | 1089 | 23713 |
| Oin-gol | city | Hambuk | Korea, Dem. Peoples Rep. of (North) | 41.05 | 129.35 | 839 | 10272 |