Εξαμίλιον τείχος (in Greek) | |
 A preserved portion of the wall with the base of a tower. | |
  Shown within Greece | |
| Location | Corinth, Corinthia, Greece |
|---|---|
| Region | Corinthia |
| Coordinates | 37°55′34″N 22°58′21″E / 37.92611°N 22.97250°E |
| Type | Defensive wall |
| History | |
| Periods | Early Medieval to Late Medieval |
| Site notes | |
| Condition | Ruined |
| Ownership | Public |
| Management | 25th Ephorate of Byzantine Antiquities |
| Public access | Yes |
| Website | Hellenic Ministry for Culture and Tourism |
The Hexamilion wall (Greek: Εξαμίλιον τείχος, "six-mile wall") was a defensive wall constructed across the Isthmus of Corinth, guarding the only land route onto the Peloponnese peninsula from mainland Greece. It was constructed between AD 408 and 450, under the reign of Theodosius II.