Korinthia is a regional unit of Greece in the Peloponnese. Named after its main city, Korinth, the area encompassed part of the Isthmus of Poseidon, the only land route between the Peloponnese and Attika, and was strategically placed in times of war between Sparta and Athens.
The land was also renowned for its abundance of clay pits, with the resulting pottery production forming a principal part of its economy during the 5th century BCE. Another thing Korinthia, and especially Korinth, was famous for were the hetaerae.
During the Peloponnesian War, the misthios Kassandra visited Korinthia on the advice of Alkibiades, who suggested that Anthousa, the leader of the hetaera, may have information on her mother's whereabouts. In exchange for information, Kassandra worked with Anthousa and her hetaerai to eliminate The Monger, a member of the Cult of Kosmos who had seized control of Korinth.
The region of Korinthia was made up of seven smaller regions:
- Grove Kromyon
- Isthmus of Poseidon
- Kraneion Plains
- Valley of Judgment
- Valley of the Pegasos
- The emblem of Korinthia features the stylized head and wing of Pegasos, for in the Greek myths it was Bellerophon, the son of the king of Korinth, who tamed the winged horse as it came to drink from the Spring of Peirene.
- In the message boards of Korinthia, the emblem displayed is a full figure of Pegasos.