The Tsuyama Line (津山線, Tsuyama-sen) is a railway line operated by West Japan Railway Company (JR West) connecting Okayama and Tsuyama in Okayama Prefecture, Japan.

All-stations "Local" (普通, futsū) and limited-stop "Rapid" (快速, kaisoku) services called Kotobuki (ことぶき) operate over the line.

[1] Some Rapid services also stop at Nonokuchi and Takebe stations.

[1] The line was opened on 21 December 1898 by the Chugoku Railway (中国鉄道).

[2] It was nationalized on 1 June 1944, becoming part of the Japanese National Railways (JNR) system, and from 1 April 1987, with the privatization of JNR, it was transferred to the control of West Japan Railway Company (JR West).