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Abdera (Ἄβδηρα) Greek city in Thrace

Abydus (Ἄβυδος) City in Mysia

Acarnania (Ἀκαρνανία) The most westerly region of the central Greek mainland.

Achaea (Ἀχαία) A region in the north of the Peloponnese, in the Greek mainland.

Acis (Ἄκις) A river in eastern Sicily, below Mt Etna.

Actium (Ἄκτιον) A promontory in Acarnania (see above).

Adiabene (Ἀδιαβηνή) A part of Assyria (see below).

Adranum, Adranus (Ἀδρανόν, Ἀδρανός) City in Sicily, built near the shrine of the Sicel divinity Adranus.

Aeolian Islands (Αἰόλου νῆσοι) Group of volcanic islands, off the north coast of Sicily.

Aethalia (Αἰθάλεια) Latin Ilva (modern Elba), off the coast of Tyrrhenia.

Aetolia (Αἰτωλία) Mountainous district on the north coast of the Gulf of Corinth.

Agriean territory (Ἀγριέων χῶρα) A region in Thrace.

Akonai (Ἀκόναι) City in Bithynia, near Heraclea.

Albania (Ἀλβανία) A region in the eastern Caucasus, on the western shore of the Caspian Sea.

Alex, Halex (Ἅληξ, Ἄληξ) A river in the toe of Italy, forming the boundary between Rhegium and Locri.

Allifae, Alife, Aliphanus, Allifanus A city of Samnium in Italy.

Alpheius, Alpheus (Ἀλφειός, Ἀλφεός) A major river in the Peloponnese, rising in Arcadia and flowing into the Ionian Sea.

Ammon, Ammonium An oasis (El Siwa) in Egypt.

Amphipolis (Ἀμφίπολις) A Greek city in Thrace.

Amyclae A city near Tarracina in Italy, later abandoned.

Amyclaean Lake (Ἀμυκλαία λίμνη) A lake or marsh near Amyclae (see above); later called Fundanus.

Antandria, Antandrus (Ἀντανδρία, Ἄντανδρος) Antandria is the area around the city of Antandrus in the Troad.

Antissa (Ἄντισσα) A city in the island of Lesbos.

Aornos, Aornis (Ἄορνος, Ἄορνις) 1 Lake Avernus, near Cumae in Italy.

Aornos, Aornis (Ἄορνος, Ἄορνις) 2 A high rock in India.

Apollonia (Ἀπολλωνία) A Greek city in Illyria (and at times under the control of Epirus).

Arabia (Ἀραβία) The Arabian Peninsula.

Arabian Gulf (Ἀράβιος κόλπος) The Red Sea.

Ardiaean country (Ἀρδιαίων χῶρα) A part of Illyria, inhabited by the Ardiaei.

Areta (Ἀρετά) A river in southern Italy, near Croton.

Argos (Ἄργος) A city in the Peloponnese, in the central Greek mainland.

Armenia (Ἀρμενία) A region extending from the eastern end of the south coast of the Euxine to the Caspian Sea (though its boundaries varied greatly over time).

Aroanius (Ἀροάνιος) A river in Arcadia in the central Peloponnese, near the city of Pheneus.

Ascania (Ἀσκανία) A lake in Bithynia, with Nicaea on its eastern shore.

Assyria (Ἀσσυριά) A region and former empire in Mesopotamia.

Astypalaea (Ἀστυπάλαια) An island of the Dodecanese, west of Cos.

Athamania (Ἀθαμανία) A district in the south-east of Epirus.

Athens (Ἀθῆναι) Chief city of Attica (see below)

Atintania (Ἀτιντανία) A district in Illyria, bordering on the territory of Apollonia (see above).

Attica (Ἀττική) A region to the east of the central portion of the Greek mainland, with Athens as its chief city.