Greek National Road 30 (Greek: Εθνική Οδός 30, abbreviated as EO30) is a single carriageway road in central Greece. It connects the cities of Arta and Volos, via Trikala and Karditsa.
The western end of the Greek National Road 30 is in Arta, where it is connected with GR-5. It runs northeast through the sparsely populated Athamanika mountains, until it reaches the town Pyli, where it enters the Thessalian Plain. At Trikala it connects with the GR-6, and turn southeast towards Karditsa, where it turns east. The section between Neo Monastiri and Farsala is shared with the GR-3. The Motorway 1 is crossed at Mikrothives. At Nea Anchialos the GR-30 reaches the coast of the Pagasetic Gulf. The GR-30 ends in the centre of Volos.
The Greek National Road 30 passes through the following places:
Coordinates: 39°27′06″N 21°51′35″E / 39.4518°N 21.8597°E