| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Īshak Āghāsī-ye Ḩavīq | city | Gilan | Iran | 38.15 | 48.88 | 127 | 1940 |
| Īshaqlū | city | Azarbayjan-e Sharqi | Iran | 38.43 | 46.57 | 7549 | 1937 |
| Īshgeh Sū | city | Azarbayjan-e Gharbi | Iran | 38.98 | 44.84 | 5416 | 3166 |
| Īshgeh Sū | city | Azarbayjan-e Gharbi | Iran | 37.75 | 44.90 | 5209 | 6109 |
| Īshgāh | city | Gilan | Iran | 37.21 | 49.96 | -1689 | 40373 |
| Īshkanān | city | Fars | Iran | 27.23 | 53.61 | 1253 | 1955 |
| Īshkeh Daraq | city | Azarbayjan-e Sharqi | Iran | 37.60 | 46.68 | 7549 | 2150 |
| Īshkeh Darreh | city | Azarbayjan-e Sharqi | Iran | 37.60 | 46.68 | 7549 | 2150 |
| Īshkel | city | Kerman | Iran | 30.05 | 55.20 | 5928 | 9119 |
| Īshkā’ | city | Gilan | Iran | 37.21 | 49.96 | -1689 | 40373 |
| Īshkūh | city | Gilan | Iran | 36.86 | 49.90 | 4455 | 9884 |
| Īshkūh-e Pā’īn | city | Gilan | Iran | 36.86 | 49.89 | 5252 | 9884 |
| Īshlaq | city | Azarbayjan-e Sharqi | Iran | 37.60 | 47.62 | 5154 | 2533 |
| Īshlīkī | city | Gilan | Iran | 37.29 | 49.90 | -1689 | 54995 |
| Īshmaq | city | Azarbayjan-e Sharqi | Iran | 37.49 | 46.55 | 7011 | 2767 |
| Īshqolū | city | Azarbayjan-e Gharbi | Iran | 36.94 | 46.64 | 6059 | 3427 |
| Īshtahābād | city | Alborz | Iran | 35.73 | 50.37 | 3759 | 2079 |
| Īshālar | city | Golestan | Iran | 37.41 | 55.36 | 314 | 3278 |
| Īshūrī | city | Kerman | Iran | 27.20 | 58.37 | 1669 | 894 |
| Īskandarī | city | Esfahan | Iran | 32.83 | 50.44 | 7057 | 4658 |
| Īskatun | city | Kordestan | Iran | 35.13 | 47.19 | 5898 | 4470 |
| Īsowf | city | Khorasan-e Jonubi | Iran | 32.64 | 60.05 | 5328 | 596 |
| Īsowleh | city | Kordestan | Iran | 35.66 | 46.44 | 5446 | 4023 |
| Īstehri | city | Markazi | Iran | 34.80 | 49.26 | 6709 | 9960 |
| Īstgāh | city | Khuzestan | Iran | 32.78 | 48.65 | 1669 | 4975 |
| Īstgāh Padakī | city | Sistan va Baluchestan | Iran | 29.45 | 60.95 | 5029 | 74241 |
| Īstgāh Z̄oghāl | city | Mazandaran | Iran | 36.62 | 51.51 | 157 | 21694 |
| Īstgāh-e Abar Rad | city | Tehran | Iran | 35.21 | 51.79 | 2650 | 15755 |
| Īstgāh-e Bon-e Kūh | city | Semnan | Iran | 35.31 | 52.43 | 3349 | 6556 |
| Īstgāh-e Bāghebānī-ye Mīān Jangal-e Fasā | city | Fars | Iran | 29.16 | 53.42 | 5869 | 4818 |
| Īstgāh-e Bīsheh | city | Lorestan | Iran | 33.33 | 48.88 | 4189 | 2411 |
| Īstgāh-e Cham Sangar | city | Lorestan | Iran | 33.17 | 48.76 | 3349 | 1538 |
| Īstgāh-e Gaduk | city | Tehran | Iran | 35.83 | 52.92 | 6843 | 2120 |
| Īstgāh-e Haft Tappeh | city | Khuzestan | Iran | 32.08 | 48.33 | 232 | 35180 |
| Īstgāh-e Kadūy | city | Tehran | Iran | 35.83 | 52.92 | 6843 | 2120 |
| Īstgāh-e Khzāneh | city | Kerman | Iran | 30.20 | 56.99 | 5869 | 25226 |
| Īstgāh-e Mīrvarzān | city | Mazandaran | Iran | 36.22 | 52.90 | 1669 | 2533 |
| Īstgāh-e Mīān Āb | city | Khuzestan | Iran | 31.97 | 48.45 | 121 | 9557 |
| Īstgāh-e Padakī | city | Sistan va Baluchestan | Iran | 29.45 | 60.95 | 5029 | 74241 |
| Īstgāh-e Rāh Āhan Garmsār | city | Semnan | Iran | 35.23 | 52.31 | 2755 | 14403 |
| Īstgāh-e Rāh Āhan-e Khorram Darreh | city | Zanjan | Iran | 36.18 | 49.23 | 5144 | 51261 |
| Īstgāh-e Rāh Āhan-e Qarah Tappeh | city | Azarbayjan-e Gharbi | Iran | 38.33 | 44.83 | 5068 | 4552 |
| Īstgāh-e Shahīd Cherāgh‘alī | city | Khuzestan | Iran | 32.82 | 48.77 | 1669 | 4917 |
| Īstgāh-e Taleh Zanj | city | Khuzestan | Iran | 32.82 | 48.77 | 1669 | 4917 |
| Īstgāh-e Z̄oghāl | city | Mazandaran | Iran | 36.62 | 51.51 | 157 | 21694 |
| Īstgāh-e Āb Nīl | city | Esfahan | Iran | 32.50 | 51.58 | 5341 | 71689 |
| Īstgāh-e Āhūdasht | city | Khuzestan | Iran | 31.58 | 48.57 | 72 | 9685 |
| Īstgāh-e Āzādvār | city | Khorasan-e Razavi | Iran | 36.74 | 56.75 | 3349 | 1639 |
| Īstgāh-e Şā‘eb | city | Azarbayjan-e Sharqi | Iran | 37.37 | 46.98 | 5127 | 2235 |
| Īstgāh-e Ḩamīd | city | Khuzestan | Iran | 31.13 | 48.31 | 22 | 9685 |
| Īstgāh-e-Cham Sanger | city | Lorestan | Iran | 33.19 | 48.82 | 3349 | 2145 |
| Īstgāh-ye Zavār | city | Esfahan | Iran | 33.45 | 52.49 | 3349 | 48136 |
| Īstowr | city | Kerman | Iran | 29.35 | 56.14 | 6709 | 596 |
| Īstādegī | city | Khuzestan | Iran | 32.22 | 48.84 | 213 | 5215 |
| Īstī | city | Ardabil | Iran | 38.89 | 47.91 | 5029 | 4638 |
| Īstī Bolāgh | city | Hamadan | Iran | 35.70 | 48.27 | 5869 | 4108 |
| Īstī Bāghcheh | city | Azarbayjan-e Sharqi | Iran | 39.00 | 47.51 | 1669 | 4390 |
| Īstī Qol | city | Zanjan | Iran | 36.64 | 47.56 | 5869 | 2086 |
| Īstīn | city | Khorasan-e Jonubi | Iran | 31.31 | 60.08 | 5869 | 149 |
| Īstū Chāh | city | Khorasan-e Jonubi | Iran | 33.55 | 58.44 | 4396 | 596 |
| Īsābād | city | Markazi | Iran | 34.02 | 50.30 | 6709 | 979 |
| Īsāveh Band | city | Gilan | Iran | 37.76 | 48.80 | 1669 | 2980 |
| Īsīn | city | Hormozgan | Iran | 27.32 | 56.28 | 259 | 37966 |
| Īsīābād | city | Kerman | Iran | 30.99 | 56.70 | 6709 | 1192 |
| Īs̄hār | city | Yazd | Iran | 30.63 | 54.11 | 5029 | 447 |
| Īs̄ār | city | Azarbayjan-e Gharbi | Iran | 37.54 | 45.01 | 5029 | 72585 |
| Īs̄ārdeh | city | Mazandaran | Iran | 36.79 | 50.77 | 830 | 18674 |