The Honmachi Line (本町線, Honmachi-sen) is a 1.5 km light rail line owned by Iyotetsu.

The line runs entirely within the city of Matsuyama, Ehime Prefecture, Japan.

The Honmachi Line was built in 1911 by the Matsuyama Electric Railway (松山電気軌道), who ran electric trams on a 1,435 mm (4 ft 8+1⁄2 in) track.

[1][2] The Matsuyama Electric Railway was merged with Iyotetsu in 1921, who continued to operate the line.

The line was briefly closed in 1945 due to damages from air raids in the Second World War, but was restored in 1948.