The Nagasaki Main Line , or simply Nagasaki Line, is a railway line owned by the Kyushu Railway Company connecting Tosu Station in Saga Prefecture to Nagasaki Station in Nagasaki Prefecture, Japan. There is a separate branch of this line from Kikitsu Station to Urakami Station by way of Nagayo Station and the Nagasaki Tunnel, avoiding a long detour.
Kiha 47, which became the mainstay of the non-electrified section of the Nagasaki Main Line (Kōhoku Station on September 24, 2022)