| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Seiyaf | city | Halab | Syria | 36.76 | 38.35 | 1811 | 5215 |
| Seiyo | city | Chungnam | Korea, Republic of (South) | 36.45 | 126.80 | 830 | 7977 |
| Seiyu | city | Jeonbuk | Korea, Republic of (South) | 35.57 | 126.86 | 118 | 112082 |
| Seiyu | city | Grand Gedeh | Liberia | 5.99 | -7.88 | 961 | 447 |
| Seiyum | city | West Sepik | Papua New Guinea | -3.33 | 142.17 | 1161 | 596 |
| Seiyun | city | Hadramawt | Yemen | 15.94 | 48.79 | 2509 | 1788 |