| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Сиалеевская Пятина | city | Mordoviya | Russia | 53.81 | 44.52 | 830 | 1490 |
| Сиалеевский Майдан | city | Mordoviya | Russia | 54.08 | 44.20 | 830 | 518 |
| Сиамо | city | Kamchatskiy Kray | Russia | 52.07 | 158.33 | 0 | 0 |
| Сиан | city | Amurskaya Oblast' | Russia | 53.30 | 126.95 | 830 | 0 |