T
| Ancient name | Location | Modern name | Also known as |
| Taras (Τάρᾱς) | southern Italy | Taranto | Tarentum, Tarantas (Τάραντας) |
| Tanagra | Boeotia, Greece | Graea, Poimandria | |
| Tanais | north-eastern Sea of Azov, Russia | abandoned | Tánaïs (Τάναϊς) |
| Tauromenion (Ταυρομένιον) | east coast of Sicily | Taormina | Taurmina, Tauromenium |
| Tegea | Arcadia, Greece | Alea | |
| Tenedos | Turkish island in northern Aegean Sea | Bozcaada | Bozca ada, Tenedhos (Τένεδος) |
| Teos (Τέως) | Ionia, western Turkey | abandoned | Teo |
| Thassos, Θάσος | Macedonia (Greece)-Thrace, Greece | Thassos, Greece | Limenas, Λιμένας |
| Thebes, Greece | Boeotia, Greece | Thēbai (Θῆβαι), Thiva (Θήβα) | |
| Theodosia (Θεοδοσία) | Crimea, Ukraine | Feodosiya (Феодосія, Феодосия) | Kefe, Feodosia |
| Therma | Mygdonia, Greece | Therme (Θέρμα, Θέρμη) | |
| Thespiae | Boeotia, Greece | abandoned | Thespiai (Θεσπιαι) |
| Thronion | Epirus, Greece | abandoned | Thronium |
| Thoricus | southern Attica, Greece | abandoned | Thorico |
| Thurii (Θούριοι) | Magna Graecia, southern Italy | abandoned | Thurium (Θούριον), Copia, Copiae, Turios, Thurio Magna Graecia |
| Thyreum | |||
| Thyria | |||
| Tomis | Black Sea coast of Romania | Constanţa | Konstantia, Köstence |
| Tragurion | Vis, Croatia | Trogir | Traù, Tragurium, Trau |
| Trapeze | Crete, Greece | ||
| Trapezus, Arcadia | Black Sea coast of north-eastern Turkey | Trabzon | Trapezounta (Τραπεζούντα) |
| Tripolis (Τρίπολις) | Lebanon | Tripoli | |
| Tripolis (Τρίπολις) | Libya | Tripolis | |
| Tripolis (Τρίπολις) | Pontus, north-eastern Turkey | Tirebolu | Ischopolis |
| Tripolis (Τρίπολις) | Thessaly, Greece | Tripolis Larisaia | |
| Tripolis (Τρίπολις) | Phrygia | abandoned | Neapolis, Apollonia, Antoninopolis |
| Troezen (Τροιζήν) | northeastern Peloponnese, Greece | Troizina, Trizina | |
| Troy | Dardanelles, north-eastern Turkey | Truva | Troia (Τροία), Ilion (Ἴλιον), Īlium, Wilusa, Truwisa, Hisarlık |
| Tylissos | Crete, Greece | ||
| Tyras | Ukrainian Black Sea coast | Bilhorod-Dnistrovskyi | |
| Tyros | Lebanon | Tyre | Τύρος, Tyre, Sur |
| Tyritake (Τυριτάκη) | Crimea, Cimmerian Bosporus | abandoned |
Read more about this topic: List Of Ancient Greek Cities