Ancient Corinth was an important city-state of ancient Greece and was considered to be the richest city of the ancient world. It controlled an area that stretched to the east of the current prefecture of Corinthia and to the northeast of the prefecture of Argolis. It also controlled the key position of the Isthmus.

Bordered with Sikyon on the west, with the Megarians in the east, with the Epidaurians in the south and with the Arcadians in the southwest.

It has been the most important commercial hub of the ancient world before being threatened by Athens. It was built at the foot of the Acrocorinth where the corresponding archaeological site is today.