The Chichibu Main Line (秩父本線, Chichibu-honsen) is a railway line in Japan, owned by the private railway operator Chichibu Railway, linking Hanyū and Mitsumineguchi, both in Saitama Prefecture.

(Weekends) As of 1 April 2016[update], the Chichibu Railway operates the following fleet of rolling stock on the line.

[1] The Jōbu Railway (上武鉄道) opened the section between Kumagaya and Yorii on 7 October 1901 operated by the use of steam haulage.

[3] The line was extended in stages, reaching Chichibu in 1914.

From 1 February 1952, The line voltage was raised to 1,500 V DC.