| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Osaegi | city | Gyeongnam | Korea, Republic of (South) | 35.58 | 128.46 | 111 | 13002 |
| Osakgol | city | Gyeongnam | Korea, Republic of (South) | 35.56 | 128.46 | 68 | 13780 |
| Osal-li | city | Gyeongnam | Korea, Republic of (South) | 35.00 | 128.19 | 236 | 8531 |
| Osan | city | Gyeongnam | Korea, Republic of (South) | 35.00 | 128.19 | 236 | 8531 |
| Osan | city | Gyeongnam | Korea, Republic of (South) | 35.28 | 127.99 | 170 | 10702 |
| Osan | city | Gyeongnam | Korea, Republic of (South) | 35.37 | 128.79 | 13 | 21761 |
| Osan | city | Gyeongnam | Korea, Republic of (South) | 35.87 | 127.92 | 1669 | 4286 |
| Osan | city | Gyeongnam | Korea, Republic of (South) | 35.69 | 127.69 | 1669 | 6386 |
| Osan | city | Gyeongnam | Korea, Republic of (South) | 34.94 | 128.36 | 154 | 26914 |
| Osan | city | Gyeongnam | Korea, Republic of (South) | 35.55 | 128.62 | 301 | 11178 |
| Osan-ni | city | Gyeongnam | Korea, Republic of (South) | 35.15 | 128.55 | 131 | 149652 |
| Osan-ni | city | Gyeongnam | Korea, Republic of (South) | 35.00 | 128.19 | 236 | 8531 |
| Osei-ri | city | Gyeongnam | Korea, Republic of (South) | 35.50 | 127.84 | 341 | 5960 |
| Osen-ri | city | Gyeongnam | Korea, Republic of (South) | 35.11 | 127.82 | 298 | 6258 |
| Osil | city | Gyeongnam | Korea, Republic of (South) | 34.89 | 127.87 | 170 | 12683 |
| Osil | city | Gyeongnam | Korea, Republic of (South) | 35.76 | 128.15 | 948 | 7410 |
| Osinaraettam | city | Gyeongnam | Korea, Republic of (South) | 35.06 | 128.42 | 3 | 50892 |
| Osinsaettam | city | Gyeongnam | Korea, Republic of (South) | 35.07 | 128.42 | 101 | 62960 |
| Oso | city | Gyeongnam | Korea, Republic of (South) | 35.48 | 128.36 | 196 | 8103 |
| Oso-dong | city | Gyeongnam | Korea, Republic of (South) | 35.48 | 128.36 | 196 | 8103 |
| Oso-dong | city | Gyeongnam | Korea, Republic of (South) | 35.58 | 128.27 | 249 | 6923 |
| Oso-ri | city | Gyeongnam | Korea, Republic of (South) | 35.10 | 128.42 | 206 | 81576 |
| Oso-ri | city | Gyeongnam | Korea, Republic of (South) | 35.57 | 128.27 | 249 | 6860 |
| Osu | city | Gyeongnam | Korea, Republic of (South) | 34.84 | 128.59 | 29 | 34461 |
| Osu-ri | city | Gyeongnam | Korea, Republic of (South) | 34.84 | 128.59 | 29 | 34461 |