Longos (Greek: Λόγγος) is a village in the municipality of Aigialeia in the northeastern part of Achaea in the Peloponnese, Greece.

The villages Longos and Selianitika (adjacent to the southeast) share a beautiful beach on the Gulf of Corinth which is approximately 1.5 km long.

The Greek National Road 8A (Athens - Corinth - Patras) runs southwest of the village.

Longos historical football team, "Aris Longou", used to be the pride of the natives due to the participation in the First Local Division.

Aris Longou produced skilled football players such as Giannis Baltimas - former Panachaiki goalkeeper who participated in the Greek Super League.