| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Onp'aengi | city | Jeonbuk | Korea, Republic of (South) | 36.01 | 127.77 | 1177 | 4618 |
| Onp'o | city | Korea, Republic of (South) | 35.60 | 126.48 | 9 | 4930 | |
| Onp'o | city | Gyeongnam | Korea, Republic of (South) | 34.88 | 128.03 | 308 | 8798 |
| Onp'o-ri | city | Korea, Republic of (South) | 35.60 | 126.48 | 9 | 4930 | |
| Onp'ung-dong | city | P'yongbuk | Korea, Dem. Peoples Rep. of (North) | 40.32 | 125.06 | 915 | 18472 |
| Onp'ung-ni | city | P'yongbuk | Korea, Dem. Peoples Rep. of (North) | 40.32 | 125.07 | 1020 | 18459 |
| Onp'yong | city | Hwangbuk | Korea, Dem. Peoples Rep. of (North) | 38.43 | 125.71 | 13 | 29678 |
| Onp'yong | city | Jeju | Korea, Republic of (South) | 33.41 | 126.90 | 3 | 5973 |
| Onp'yong | city | Gyeongbuk | Korea, Republic of (South) | 36.00 | 128.03 | 830 | 4470 |
| Onp'yong-dong | city | Hwangbuk | Korea, Dem. Peoples Rep. of (North) | 38.43 | 125.71 | 13 | 29678 |
| Onp'yong-ni | city | Jeju | Korea, Republic of (South) | 33.41 | 126.90 | 3 | 5973 |
| Onpanghka | city | Kachin State | Burma | 25.05 | 96.30 | 830 | 2490 |
| Onpouana | city | Plateaux | Congo | -1.81 | 16.09 | 1030 | 298 |
| Onpsal | city | Oppland | Norway | 61.27 | 10.20 | 2509 | 1892 |
| Onpınar | city | Mus | Turkey | 39.28 | 41.19 | 5869 | 2797 |
| Onp’aengi | city | Jeonbuk | Korea, Republic of (South) | 36.01 | 127.77 | 1177 | 4618 |
| Onp’o-ri | city | Korea, Republic of (South) | 35.60 | 126.48 | 9 | 4930 | |
| Onp’ung-dong | city | P'yongbuk | Korea, Dem. Peoples Rep. of (North) | 40.32 | 125.06 | 915 | 18472 |
| Onp’ung-ni | city | P'yongbuk | Korea, Dem. Peoples Rep. of (North) | 40.32 | 125.07 | 1020 | 18459 |
| Onp’yŏng | city | Hwangbuk | Korea, Dem. Peoples Rep. of (North) | 38.43 | 125.71 | 13 | 29678 |
| Onp’yŏng | city | Jeju | Korea, Republic of (South) | 33.41 | 126.90 | 3 | 5973 |
| Onp’yŏng | city | Gyeongbuk | Korea, Republic of (South) | 36.00 | 128.03 | 830 | 4470 |
| Onp’yŏng-dong | city | Hwangbuk | Korea, Dem. Peoples Rep. of (North) | 38.43 | 125.71 | 13 | 29678 |
| Onp’yŏng-ni | city | Jeju | Korea, Republic of (South) | 33.41 | 126.90 | 3 | 5973 |