| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Kosei | city | Aomori | Japan | 40.91 | 140.48 | 75 | 12556 |
| Kosei | city | P'yongnam | Korea, Dem. Peoples Rep. of (North) | 38.91 | 125.53 | 193 | 108540 |
| Kosei-ri | city | Jeonnam | Korea, Republic of (South) | 34.76 | 125.91 | 49 | 3941 |
| Kosei-ri | city | Gyeonggi | Korea, Republic of (South) | 37.24 | 126.74 | 29 | 5137 |
| Koseibrahimler | city | Mugla | Turkey | 37.13 | 28.38 | 2509 | 10768 |
| Koseilyas | city | Tekirdag | Turkey | 41.02 | 27.58 | 298 | 27787 |
| Koseir | city | Al Bahr al Ahmar | Egypt | 26.10 | 34.28 | 68 | 21512 |
| Koseiri | city | Diffa | Niger | 13.70 | 11.40 | 1240 | 1341 |
| Koseison | city | P'yongnam | Korea, Dem. Peoples Rep. of (North) | 38.92 | 125.57 | 9 | 166730 |