Aigio
| Aigio Αίγιο | |
|---|---|
| The town of Aigio | |
| Coordinates: 38°15′02″N 22°04′52″E / 38.25056°N 22.08111°E | |
| Country | Greece | 
| Administrative region | West Greece | 
| Regional unit | Achaea | 
| Municipality | Aigialeia | 
| Area | |
| • Municipal unit | 151.101 km2 (58.340 sq mi) | 
| Elevation | 61 m (200 ft) | 
| Population  (2021) | |
| • Municipal unit | 25,795 | 
| • Municipal unit density | 170/km2 (440/sq mi) | 
| • Community | 20,249 | 
| Time zone | UTC+2 (EET) | 
| • Summer (DST) | UTC+3 (EEST) | 
| Postal code | 251 00 | 
| Area code(s) | 2691 | 
| Vehicle registration | ΑΧ, AZ | 
| Website | www.aigialeia.gov.gr www.aigio.gr | 
Aigio, also written as Aeghion, Aegion, Aegio, Egio (Greek: Αίγιο, romanized: Aígio, pronounced [ˈeʝio]; Latin: Aegium), is a town and a former municipality in Achaea, West Greece, on the Peloponnese. Since the 2011 local government reform, it is part of the municipality Aigialeia, of which it is the seat and a municipal unit.
Aigio is the second largest city in Achaea after Patras. The municipal unit has an area of 151.101 km2. It has a population of around 26,000 while the municipality has about 49,000 inhabitants. Aigio is a port town on the Gulf of Corinth, and takes its name from the ancient city of Aegium.