| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Ивира | city | Kentriki Makedonia | Greece | 40.90 | 23.70 | 255 | 2348 |
| Игуменица | city | Ipeiros | Greece | 39.50 | 20.27 | 318 | 15049 |
| Идомени | city | Kentriki Makedonia | Greece | 41.12 | 22.51 | 82 | 11626 |
| Иерапетра | city | Kriti | Greece | 35.01 | 25.74 | 0 | 6350 |
| Иерисос | city | Kentriki Makedonia | Greece | 40.40 | 23.88 | 0 | 4346 |
| Илия | city | Sterea Ellada | Greece | 38.85 | 23.13 | 0 | 1827 |
| Инои | city | Sterea Ellada | Greece | 38.32 | 23.61 | 416 | 14042 |
| Инофита | city | Sterea Ellada | Greece | 38.31 | 23.64 | 285 | 12648 |
| Инусес | city | Voreio Aigaio | Greece | 38.51 | 26.22 | 0 | 776 |
| Инуссес | city | Voreio Aigaio | Greece | 38.51 | 26.22 | 0 | 776 |
| Иос | city | Notio Aigaio | Greece | 36.73 | 25.28 | 98 | 1640 |
| Ипато | city | Sterea Ellada | Greece | 38.39 | 23.39 | 830 | 3993 |
| Ираклио | city | Kriti | Greece | 35.34 | 25.13 | 154 | 67841 |
| Ираклион | city | Kriti | Greece | 35.34 | 25.13 | 154 | 67841 |
| Ираклия | city | Kentriki Makedonia | Greece | 41.18 | 23.28 | 95 | 9865 |
| Истерния | city | Notio Aigaio | Greece | 37.62 | 25.05 | 830 | 479 |
| Истиэа | city | Sterea Ellada | Greece | 38.95 | 23.15 | 154 | 7003 |
| Истраня | city | Anatoliki Makedonia kai Thraki | Greece | 41.37 | 24.10 | 1669 | 967 |
| Истрон | city | Kriti | Greece | 35.12 | 25.74 | 1082 | 4350 |
| Итеа | city | Sterea Ellada | Greece | 38.43 | 22.42 | 0 | 7426 |
| Ия | city | Notio Aigaio | Greece | 36.46 | 25.38 | 830 | 2041 |