| City | Region |
|---|
| ›Sa'dabad | Bushehr› |
| ›Sabzevar | Khorasan› |
| ›Sad od Din (Sad ed Din) | Khorasan› |
| ›Sadich | Hormozgan› |
| ›Şafa'iyeh | Semnan› |
| ›Sagarkan | Hormozgan› |
| ›Saghand | Yazd› |
| ›Sahl | Semnan› |
| ›Şahneh | Kermanshah› |
| ›Saidabad-e Olya (Saidabad) | Zanjan› |
| ›Şain Dezh (Shahin Dezh) | Azarbaijan-e Gharbi› |
| ›Sain Qaleh | Zanjan› |
| ›Salakh | Hormozgan› |
| ›Şalavatabad | Kordestan› |
| ›Şalehabad | Qom› |
| ›Şalehabad | Hamadan› |
| ›Şalehabad | Kerman› |
| ›Salmas | Azarbaijan-e Gharbi› |
| ›Saman | Khorasan› |
| ›Sanandaj | Kordestan› |
| ›Sangan | Khorasan› |
| ›Saqqez | Kordestan› |
| ›Sar Dasht | Khuzestan› |
| ›Sar Dasht | Azarbaijan-e Gharbi› |
| ›Sar Khun | Chahar Mahal-e Bakhtiari› |
| ›Sar Mashhad | Bushehr› |
| ›Sarab | Azarbaijan-e Sharqi› |
| ›Sarab-e Harasam | Kermanshah› |
| ›Sarakhs | Khorasan› |
| ›Sarbaz | Sistan va Baluchestan› |
| ›Sardaq | Khorasan› |
| ›Sargaz | Hormozgan› |
| ›Sari | Mazandaran› |
| ›Sarshur | Sistan va Baluchestan› |
| ›Saruq | Markazi› |
| ›Sarvestan | Fars› |
| ›Sarzeh | Hormozgan› |
| ›Satveh | Semnan› |
| ›Sedeh | Fars› |
| ›Sefid Dasht | Chahar Mahal-e Bakhtiari› |
| ›Semirom | Esfahan› |
| ›Semnan | Semnan› |
| ›Senijan | Markazi› |
| ›Serishabad | Kordestan› |
| ›Seveyreh | Khuzestan› |
| ›Seyfabad | Fars› |
| ›Seyyed Jabal od Din | Hormozgan› |
| ›Seyyed Şaleh od Din | İlam› |
| ›Shaban | Zanjan› |
| ›Shadegan | Khuzestan› |
| ›Shaft | Gilan› |
| ›Shah Abu Zakareya | Fars› |
| ›Shah-e Gheyb | Fars› |
| ›Shahabad | Kerman› |
| ›Shahabad | Kerman› |
| ›Shahabi | Fars› |
| ›Shahdab | Kerman› |
| ›Shahindezh (Shahin Dej) | Azarbaijan-e Gharbi› |
| ›Shahmirzad | Semnan› |
| ›Shahr-e Babak | Kerman› |
| ›Shahr-e Kord | Chahar Mahal-e Bakhtiari› |
| ›Shahr-e Now | Yazd› |
| ›Shahrab | Esfahan› |
| ›Shahrake Behdari | Azarbaijan-e Gharbi› |
| ›Shahrü'i | Khuzestan› |
| ›Shal | Qazvin› |
| ›Shalamzar | Chahar Mahal-e Bakhtiari› |
| ›Shamil | Hormozgan› |
| ›Shammariyeh | Khuzestan› |
| ›Shanbeh | Bushehr› |
| ›Sharqi | Fars› |
| ›Shir Geshk (Shir Gesht) | Khorasan› |
| ›Shirabad | Gilan› |
| ›Shiraz | Fars› |
| ›Shirvan | Khorasan› |
| ›Shot (Showt) | Azarbaijan-e Gharbi› |
| ›Shur-e Gaz | Kerman› |
| ›Shurak-e Maleki | Khorasan› |
| ›Shusf | Khorasan› |
| ›Shush | Khuzestan› |
| ›Shushtar | Khuzestan› |
| ›Shüveh | Bushehr› |
| ›Si Sangan | Mazandaran› |
| ›Siareh | Sistan va Baluchestan› |
| ›Sirch | Kerman› |
| ›Sirghan | Khorasan› |
| ›Sirik | Hormozgan› |
| ›Sirjan | Kerman› |
| ›Sirri Island (Jazireh-ye) | Hormozgan› |
| ›Sivand | Fars› |
| ›Soltanabad | Khorasan› |
| ›Soltanabad | Hormozgan› |
| ›Soltaniyeh | Zanjan› |
| ›Somba | Khorasan› |
| ›Sonqor | Kermanshah› |
| ›Sorkheh | Semnan› |
| ›Şowmaeh Sara (Sowmeh Sara) | Gilan› |
| ›Sud Jan | Chahar Mahal-e Bakhtiari› |
| ›Sulduz | Azarbaijan-e Gharbi› |
| ›Sürakabad | Kerman› |
| ›Susangerd | Khuzestan› |
| ›Suza | Hormozgan (Qeshm Island)› |
| ›Suzan | Hamadan› |
