| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Oi | city | Gyeongbuk | Korea, Republic of (South) | 35.72 | 128.56 | 1095 | 30966 |
| Oi-dong | city | Gyeongbuk | Korea, Republic of (South) | 35.71 | 128.97 | 1089 | 7880 |
| Oi-dong | city | Gyeongbuk | Korea, Republic of (South) | 35.72 | 128.56 | 1095 | 30966 |
| Oi-gol | city | Gyeongbuk | Korea, Republic of (South) | 35.71 | 128.97 | 1089 | 7880 |
| Oido | city | Gyeonggi | Korea, Republic of (South) | 37.33 | 126.70 | 0 | 79276 |
| Oil-li | city | Gyeongbuk | Korea, Republic of (South) | 35.78 | 129.45 | 285 | 8386 |
| Oil-li | city | Gyeonggi | Korea, Republic of (South) | 37.18 | 126.97 | 91 | 96394 |
| Oil-ri | city | Gyeonggi | Korea, Republic of (South) | 37.18 | 126.97 | 91 | 96394 |
| Oim-ni | city | Jeonnam | Korea, Republic of (South) | 34.78 | 126.15 | 39 | 4603 |
| Oin | city | Gyeongnam | Korea, Republic of (South) | 35.76 | 128.02 | 2070 | 3976 |
| Oin-dong | city | Gyeongnam | Korea, Republic of (South) | 35.76 | 128.02 | 2070 | 3976 |
| Oin-dong | city | Gyeongnam | Korea, Republic of (South) | 35.85 | 127.94 | 2509 | 4232 |
| Oin-dong | city | Gyeongbuk | Korea, Republic of (South) | 36.22 | 128.38 | 226 | 55204 |
| Oin-gol | city | Gangwon | Korea, Republic of (South) | 37.62 | 127.99 | 862 | 1312 |
| Oin-ri | city | Jeonnam | Korea, Republic of (South) | 34.59 | 126.03 | 88 | 4751 |