The Chōkai Sanroku Line (鳥海山ろく線 Chōkai Sanroku-sen Chōkai Submontane Line) is a Japanese railway line in Akita Prefecture in northern Japan with all station located within the city of Yurihonjō. This is the only railway line of Yuri Kōgen Railway (由利高原鉄道 Yuri Kōgen Tetsudō).