| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| JIK (IKARIA) | airport | Greece | 37.68 | 26.35 | 79 | 0 | |
| JKH (CHIOS) | airport | Greece | 38.34 | 26.14 | 15 | 0 | |
| JMK (MIKONOS) | airport | Greece | 37.44 | 25.35 | 405 | 0 | |
| JSH (SITIA) | airport | Greece | 35.22 | 26.10 | 376 | 0 | |
| JSI (ALEXANDROS PAPADIAMANTIS) | airport | Greece | 39.18 | 23.50 | 54 | 0 | |
| JSY (SYROS) | airport | Greece | 37.42 | 24.95 | 236 | 0 | |
| JTR (SANTORINI) | airport | Greece | 36.40 | 25.48 | 127 | 0 | |
| JTY (ASTYPALAIA) | airport | Greece | 36.58 | 26.38 | 165 | 0 | |
| Jafer Mahalas | city | Anatoliki Makedonia kai Thraki | Greece | 41.20 | 25.02 | 2096 | 3138 |
| Jafér | city | Anatoliki Makedonia kai Thraki | Greece | 41.20 | 25.02 | 2096 | 3138 |
| Jami-Mahale | city | Anatoliki Makedonia kai Thraki | Greece | 41.29 | 24.47 | 830 | 146 |
| Jamíon | city | Thessalia | Greece | 39.73 | 22.54 | 337 | 6482 |
| Janina | city | Ipeiros | Greece | 39.66 | 20.85 | 1669 | 72027 |
| Janitsochori | city | Dytiki Ellada | Greece | 37.39 | 21.69 | 36 | 3695 |
| Jari | city | Anatoliki Makedonia kai Thraki | Greece | 40.98 | 24.47 | 95 | 35740 |
| Jenidze | city | Kentriki Makedonia | Greece | 40.79 | 22.41 | 147 | 27671 |
| Jijiler | city | Dytiki Makedonia | Greece | 40.29 | 21.87 | 2037 | 10901 |
| Jumaya | city | Kentriki Makedonia | Greece | 41.18 | 23.28 | 95 | 9865 |
| Jumá | city | Dytiki Makedonia | Greece | 40.44 | 21.84 | 2509 | 11583 |
| Júra | city | Anatoliki Makedonia kai Thraki | Greece | 41.36 | 24.55 | 1669 | 149 |