K
| Ancient name | Location | Modern name | Also known as |
| Kallipolis | Caria, south-western Turkey | ||
| Kallipolis | Hellespont, north-western Turkey | Gelibolu | Gallipoli |
| Kallipolis | Apulia, southern Italy | Gallipoli | Callipolis |
| Kamares | Crete, Greece | ||
| Kannia | Crete, Greece | ||
| Kamarina | south-eastern coast of Sicily | abandoned | Camarina, Kamerina |
| Kasmenai | Hyblaean Mountains, south-eastern Sicily | abandoned | Casmene, Kasmene |
| Katane | east coast of Sicily | Catania | Katánē (Κατάνη), Catăna, Catĭna, Balad-al-Fil, Medinat-al-Fil, Wadi Musa, Qataniyah |
| Kerkinitida | Crimea, Ukraine | Yevpatoria | Eupatoria (Євпаторія, Евпатория), Kezlev, Kerkinitis, Gözleve |
| Kepoi | Taman Peninsula, Krasnodar Krai, Russia | abandoned, submerged | Cepoi (Κήποι, Кепы) |
| Kimmerikon | Kerch Peninsula, Crimea | abandoned | Cimmericum Crimea |
| Kios | Sea of Marmara, Bithynia, north-western Turkey | abandoned | Cius-Kios (Kίος, Kείος), Keios, Prusa, Prusias, Prusias ad Mare |
| Knossos | Crete | abandoned | Knossus, Cnossus (Κνωσός) |
| Kos | island of the Dodecanese, off Bodrum | Cos (Κως), İstanköy, Coo, Stanchio | |
| Kourion | Cyprus | Curium, Curias (Κούριον) | |
| Kyrenia | Cyprus | Girne |
Read more about this topic: List Of Ancient Greek Cities