The is a commuter rail line in Chiba Prefecture, Japan, operated by between Mabashi Station in Matsudo and Nagareyama Station in Nagareyama. The line and the operator company was called the and respectively until the renaming on August 1, 2008. The present line name was the most popular short name of the line. It was also called .
This is the only line Ryà «tetsu operates, making the company unique for being an independent railway operator with just a single 5.7 km line and no major subsidiary businesses (unlike Yamaman, or The Oriental Land Company and their Disney Resort Line). The short line functions as a link between the centre of the city of Nagareyama and the East Japan Railway Company (JR East) Jà Âban Line. However, after the opening of the Tsukuba Express on August 24, 2005, ridership fell sharply. Suica and PASMO contactless smart cards cannot be used, and Ryà «tetsu reportedly has no plans to introduce the system on the line.
On July 9, 2025, Ryutetsu announced that they had purchased four 211-6000 series 2-car trainsets from JR Central. The trains will be refurbished before entering service to replace the current 5000 series trains.
All stations are in Chiba Prefecture.
The company was incorporated on November 7, 1913 as and opened a gauge railway on March 14, 1916. The company renamed in November 1922 and rebuilt the railway track to gauge in 1924.
The company name was again changed to Nagareyama Electric Railway (Nagareyama Denki Tetsudà Â) in 1949, to Nagareyama Electric Railway (Nagareyama Dentetsu) in 1967, to Sà Âbu Nagareyama Electric Railway in 1971 and to Ryà «tetsu in 2008.
This article incorporates material from the corresponding article in the Japanese Wikipedia.