| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Сабзевар | city | Khorasan-e Razavi | Iran | 36.21 | 57.68 | 3349 | 75190 |
| Сабзивор | city | Khorasan-e Razavi | Iran | 36.21 | 57.68 | 3349 | 75190 |
| Салмас | city | Azarbayjan-e Gharbi | Iran | 38.20 | 44.77 | 4583 | 38433 |
| Санандаџ | city | Kordestan | Iran | 35.31 | 47.00 | 5029 | 118525 |
| Санандаҷ | city | Kordestan | Iran | 35.31 | 47.00 | 5029 | 118525 |
| Сарахс | city | Khorasan-e Razavi | Iran | 36.54 | 61.16 | 915 | 1890 |
| Сарі | city | Mazandaran | Iran | 36.56 | 53.06 | 180 | 33178 |
| Саққиз | city | Kordestan | Iran | 36.25 | 46.27 | 5029 | 92908 |
| Себзевар | city | Khorasan-e Razavi | Iran | 36.21 | 57.68 | 3349 | 75190 |
| Секкез | city | Kordestan | Iran | 36.25 | 46.27 | 5029 | 92908 |
| Семнан | city | Semnan | Iran | 35.58 | 53.39 | 3743 | 17731 |
| Сенендедж | city | Kordestan | Iran | 35.31 | 47.00 | 5029 | 118525 |
| Сераван | city | Sistan va Baluchestan | Iran | 27.37 | 62.33 | 4189 | 894 |
| Сердешт | city | Kordestan | Iran | 35.06 | 46.91 | 5029 | 4521 |
| Сердешт | city | Kordestan | Iran | 35.57 | 46.65 | 5987 | 4023 |
| Сердешт | city | Kordestan | Iran | 35.19 | 46.47 | 5869 | 4023 |
| Сере-Поле-Зохаб | city | Kermanshah | Iran | 34.46 | 45.86 | 1801 | 27677 |
| Серҷон | city | Kerman | Iran | 29.44 | 55.68 | 5869 | 27104 |
| Сирджан | city | Kerman | Iran | 29.44 | 55.68 | 5869 | 27104 |
| Сорӣ | city | Mazandaran | Iran | 36.56 | 53.06 | 180 | 33178 |
| Сузы | city | Khuzestan | Iran | 32.19 | 48.24 | 298 | 110322 |
| Сурек | city | Mazandaran | Iran | 36.59 | 53.21 | 183 | 31974 |
| Суршджан | city | Chahar Mahal va Bakhtiari | Iran | 32.32 | 50.68 | 6998 | 11463 |
| Суфиан | city | Azarbayjan-e Sharqi | Iran | 38.28 | 45.98 | 4501 | 59574 |
| Сәнәндәҗ | city | Kordestan | Iran | 35.31 | 47.00 | 5029 | 118525 |