Greek National Road 15 (Greek: Εθνική Οδός 15, abbreviated as EO15) is a single carriageway road in northern Greece.

It connects Agios Germanos, near the border with North Macedonia, with the Greek National Road 6 near Kalampaka.

It passes through Kastoria, Siatista and Grevena.

This Greek road or road transport-related article is a stub.

You can help Wikipedia by expanding it.40°10′58″N 21°29′51″E / 40.1827°N 21.4975°E / 40.1827; 21.4975