| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Sis | city | Kordestan | Iran | 35.20 | 47.28 | 6709 | 4070 |
| 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 |
| Sisabad | city | Khorasan-e Razavi | Iran | 36.34 | 59.66 | 3349 | 129040 |
| Sisad Dastgah | city | Khuzestan | Iran | 31.29 | 48.76 | 52 | 26671 |
| Sisakhti | city | Fars | Iran | 29.48 | 51.90 | 2778 | 5215 |
| Sisan | city | Azarbayjan-e Sharqi | Iran | 37.83 | 46.74 | 6709 | 2086 |
| Sisan-e Cha'i | city | Azarbayjan-e Sharqi | Iran | 37.84 | 46.77 | 5869 | 2086 |
| Sisan-e Now | city | Azarbayjan-e Sharqi | Iran | 37.84 | 46.77 | 5869 | 2086 |
| Sisara Pa'in | city | Mazandaran | Iran | 36.72 | 51.23 | -1689 | 13046 |
| Sisarag | city | Kordestan | Iran | 35.89 | 45.74 | 5082 | 5023 |
| Siseh Dun-e Bozorg | city | Khuzestan | Iran | 31.70 | 50.11 | 6053 | 2980 |
| Siseh Garag-e Bala | city | Kohgiluyeh va Bowyer Ahmad | Iran | 30.58 | 51.40 | 7841 | 1595 |
| Siseh Garag-e Pa'in | city | Kohgiluyeh va Bowyer Ahmad | Iran | 30.58 | 51.40 | 7841 | 1595 |
| Sishambeh | city | Gilan | Iran | 37.17 | 49.69 | 65 | 92003 |
| Sishkhambekh | city | Gilan | Iran | 37.17 | 49.69 | 65 | 92003 |
| Sisir | city | Azarbayjan-e Gharbi | Iran | 36.25 | 45.62 | 4468 | 5004 |
| Siskan | city | Khorasan-e Jonubi | Iran | 33.06 | 59.44 | 7004 | 596 |
| Sisparanlu-ye Bala | city | Khorasan-e Shomali | Iran | 37.70 | 58.01 | 5869 | 2386 |
| Sissun | city | Fars | Iran | 28.52 | 53.28 | 3582 | 4768 |
| Sistan | city | Gilan | Iran | 37.18 | 50.00 | 830 | 27014 |
| Sistan | city | Tehran | Iran | 35.99 | 51.58 | 7624 | 2086 |
| Sistan | city | Esfahan | Iran | 32.70 | 52.13 | 5029 | 9834 |
| Sistan Mahalleh | city | Golestan | Iran | 36.97 | 54.55 | 45 | 17280 |
| Sistan-e Bala va Shir Habib | city | Fars | Iran | 28.52 | 53.28 | 3582 | 4768 |
| Sistan-e `Olya | city | Fars | Iran | 28.52 | 53.28 | 3582 | 4768 |
| Sistanak | city | Khorasan-e Jonubi | Iran | 33.63 | 59.62 | 5029 | 954 |
| Sistanak | city | Khorasan-e Jonubi | Iran | 32.90 | 59.26 | 5029 | 68840 |
| Sistani | city | Khorasan-e Razavi | Iran | 35.13 | 60.80 | 2670 | 2282 |
| Sistani Mahalleh | city | Golestan | Iran | 36.91 | 54.37 | 42 | 22313 |
| Sistunak | city | Khorasan-e Jonubi | Iran | 32.90 | 59.26 | 5029 | 68840 |
| Sisun | city | Fars | Iran | 28.52 | 53.28 | 3582 | 4768 |