| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Siah Dasht | city | Khorasan-e Shomali | Iran | 37.25 | 58.13 | 4189 | 2394 |
| Sian Khaneh | city | Khorasan-e Shomali | Iran | 37.22 | 57.26 | 5029 | 1899 |
| Sib Dalu | city | Khorasan-e Shomali | Iran | 37.53 | 56.48 | 5029 | 1788 |
| Sir Separanlu-ye Bala | city | Khorasan-e Shomali | Iran | 37.70 | 58.01 | 5869 | 2386 |
| Sir Separanlu-ye Pa'in | city | Khorasan-e Shomali | Iran | 37.69 | 58.02 | 5393 | 2421 |
| Sir Siranlu-ye Pa'in | city | Khorasan-e Shomali | Iran | 37.69 | 58.02 | 5393 | 2421 |
| Sirseparanlu Bala | city | Khorasan-e Shomali | Iran | 37.70 | 58.01 | 5869 | 2386 |
| Sirsepranlu-ye `Olya | city | Khorasan-e Shomali | Iran | 37.70 | 58.01 | 5869 | 2386 |
| Sis Paranlu-ye Pa'in | city | Khorasan-e Shomali | Iran | 37.69 | 58.02 | 5393 | 2421 |
| Sisab | city | Khorasan-e Shomali | Iran | 37.46 | 57.66 | 3349 | 3135 |
| Sisparanlu-ye Bala | city | Khorasan-e Shomali | Iran | 37.70 | 58.01 | 5869 | 2386 |
| Sivaldeh | city | Khorasan-e Shomali | Iran | 37.69 | 57.74 | 5869 | 2496 |
| Siyukh Cheshmeh | city | Khorasan-e Shomali | Iran | 38.19 | 56.62 | 3349 | 1674 |