The Toden Arakawa Line is a streetcar line in Tokyo, Japan. The Tokyo Metropolitan Bureau of Transportation operates this line. The Arakawa Line is the sole survivor of Tokyo's once-extensive Tokyo Toden streetcar system, but it is not the only tram line in Tokyo, as the privately owned Toukyuu Setagaya Line is also classified as a streetcar (romen densha).
The line was originally constructed by the Oji Electric Tram Company as a part of their extensive network, with the oldest section still operating today opened in 1913. The line was at threat of being shut down along with the rest of Tokyo's streetcar system in the 1960s, but concerted opposition from residents prevented this and parts of lines 27 (Minowabashi-Akabane) and 32 (Arakawa-Waseda) were merged to form the line as it is today. The line was sold to the Tokyo Metropolitan Bureau of Transportation in 1974, which renamed it the Toden Arakawa Line.
The Toden Arakawa Line operates between the terminals at Minowabashi Station and Waseda Station. It runs along Meiji Street between Asuka-yama Station and Oji Eki-mae Station. Otherwise, it operates on its own tracks. Presently, single driver-operated cars make the 12.2 km trip in 50 minutes. The gauge is 1,372 mm (4'6"). The line is fully double-track, and draws 600 V electrical supply.
Of particular interest is the terminus at Minowabashi, near the historical site of Edo's red-light district Yoshiwara. It features a completely covered shopping street several blocks long in the once-common Ameyoko style (a shoutengai) that can only be seen nowadays in Tokyo's outlying neighborhoods.