National roads in Greece

A national road (Greek: Εθνική Οδός) is a class of all-purpose trunk roads in Greece. They are less important than a motorway but more important than a provincial road. The layout of the national road network varies a lot, ranging from fast multi-lane dual carriageways to twisting two-lane single carriageways.

The current system of national roads in Greece was created in July 1963, and have been updated many times since then. Most national roads have route numbers that begin with "EO", non-continuously from EO1 to EO99, but some (such as Thessaloniki Inner Ring Road) have no number.