Greek National Road 39 is a national road in the Peloponnese region of Greece. It connects Tripoli with Gytheio via Sparti. It is connected with the Greek National Road 7 in Tripoli, with the A7 motorway south of Tripoli, with the Greek National Road 82 in Sparti, and with the Greek National Road 86 in Krokees. The EO39 is part of European route E961 for its entire length.