H
| Ancient name | Location | Modern name | Also known as |
| Hagios Onouphrios | Crete, Greece | ||
| Hagia Triada | Crete, Greece | Ayias Triadha | |
| Halicarnassus | Caria, Turkey | Bodrum | Halikarnassós, Alikarnassós (Ἁλικαρνασσός), Halikarnas, Petronium (Πετρώνιον) |
| Helike | Achaea, Greece | submerged | |
| Heliopolis | Lebanon | Baalbek | Heliopolis, Baalbek, Ἡλιούπολις |
| Hellespontos | Turkey | Dardanelles | |
| Helorus | south-east coast of Sicily | abandoned | Heloros, Helorum, Elorus, Ἔλωρος, Ἕλωρος, Eloro |
| Hēmeroskopeion | Province of Alicante, Spain | Dénia | Ἡμεροσκοπεῖον, Dianium |
| Heraclea Perinthus | western Turkey | Marmara Ereğli | Heraclea Thraciae, Heraclea (Ἡράκλεια), Heraclea |
| Heraclea | Lucania, Italy | abandoned | Anglona |
| Heraclea by Latmus | near Lake Bafa, Muğla Province, Turkey | Kapıkırı | Latmus, Λάτμος |
| Heraclea Cybistra | near Ereğli, Turkey | abandoned | |
| Heraclea Lyncestis | south-western Republic of Macedonia | Bitola | Herakleia Lynkestis |
| Heraclea Minoa | near Montallegro, south coast of Sicily | abandoned | Hêrakleia Minôia, Rhachlôtês, Heracliensis |
| Heraclea Pontica | Bithynia, Turkey | Karadeniz Ereğli | |
| Heraclea Sintica | Pirin Macedonia, Bulgaria | abandoned | |
| Heraclea Trachis | Euboea, Greece | Heraclea | Trachis, Heraclea Trachinia |
| Heraklion | Crete, Greece | Iráklion | |
| Hermione | Peloponnese, Greece | Ermioni (Ερμιόνη) | |
| Hermonassa | Taman peninsula, Krasnodar Krai, Russia | Tmutarakan (Тмутаракань) | |
| Hierapetra | Southern Crete, Greece | ||
| Hierapolis | Pamukkale, western Turkey | abandoned | Hierapolis (Ἱεράπολις) |
| Himera | northern coast of Sicily | abandoned, site subsequently re-settled | Thermae, Therma, Thermae Himerenses |
| Histria | Black Sea coast of Romania | abandoned | Istros (Ιστριη) |
| Hybla Gereatis | southern slope of Mount Etna, Sicily | abandoned | |
| Hybla Heraea | Hyblaean Mountains, south-eastern Sicily | Ragusa | Hibla, Heresium, Rogos, Rakkusa |
| Hyele | Campania, Italy | Velia | Elea |
Read more about this topic: List Of Ancient Greek Cities