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.
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 image 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.