National Route 34 (国道34号, Kokudō Sanjūyon-gō) is a highway in Japan on the island of Kyūshū which runs from Saga City in Saga Prefecture to Nagasaki in Nagasaki Prefecture. It follows the old Nagasaki Kaidō, a road from the Edo period. About 10% of the route is 4 lanes or more, and the rest is two lanes.