The Main Line (本線, Honsen) is a streetcar line of Hiroshima Electric Railway (Hiroden) in Hiroshima, Japan. The line has been operated since 1912. The total distance of the line is 5.5 kilometres (3.4 mi). Routes 1, 2, 3, 5, 6, 7 and 8 operate on the line. The line has 20 stations, numbered M1 through M19 (two stations at Kamiyachō are both numbered M9).