Seibu Tamako Line

The Seibu Tamako Line (西武多摩湖線, Seibu Tamako-sen) is a 9.2 km single-track railway line in Tokyo, Japan, operated by the private railway operator Seibu Railway.

Seibu Tamako Line
Seibu Tamako Line train near Hagiyama station
Native name西武多摩湖線
TypeCommuter rail
SystemSeibu Shinjuku
LocaleKanto region
OwnerSeibu Railway
Rolling stockSeibu 101 series and Seibu 3000 series
Line length9.2 km (5.7 mi)
Number of tracks1
Track gauge1,067 mm (3 ft 6 in)
Electrification1,500 V DC, overhead catenary
Operating speed95 km/h (60 mph)
Route map
0.0 Kokubunji: JR Chūō line
for Tokyo and Takao
Kokubunji Line
from Kokubunji
2.4 Hitotsubashi-Gakuen
3.4 Ōmekaidō
Haijima Line
4.6 Hagiyama
Shinjuku Line
from Haijima
5.6 Yasaka
Kokubunji Line
for Kokubunji and Higashi-Murayama
8.1 Musashi-Yamato
9.2 Seibu-Yūenchi:Yamaguchi Line

The line is part of the Seibu Shinjuku group of railway lines that connects suburban areas of western Tokyo to Seibu and JR East main lines that extend to central Tokyo. The line is named after the Tama Lake (多摩湖, Tamako), a major reservoir supplying water to Tokyo, located close to the terminus of the line at Seibu-Yūenchi. Since July 2008, recorded announcements on trains have been provided in English in addition to Japanese and, as part of Seibu Railway's ongoing refurbishment programme, signage and maps at stations are also bilingual.


No. Name Japanese Distance (km) Transfers Location
ST01 Kokubunji 国分寺 0.0 Seibu Kokubunji Line
Chūō Line (Rapid)
Kokubunji, Tokyo
ST02 Hitotsubashi-Gakuen 一橋学園 2.4   Kodaira, Tokyo
ST03 Ōmekaidō 青梅街道 3.4
ST04 Hagiyama 萩山 4.6 Seibu Haijima Line Higashimurayama, Tokyo
ST05 Yasaka 八坂 5.6  
ST06 Musashi-Yamato 武蔵大和 8.1
ST07 Seibu-Yūenchi 西武遊園地 9.2 Seibu Yamaguchi Line


All services on this line operate as all-stations "Local" (普通列車, futsū-ressha) services, mainly for the full length of the line between Seibu-Yūenchi and Kokubunji stations, with other services terminating at starting from the middle station, Hagiyama.[1] The line is single track except at Hitotsubashi-Gakuen station and Hagiyama station, where services in operation routinely pass each other.


This line connects the suburban Seibu lines with the JR Chūō line at Kokubunji. At Hagiyama, there is transfer to the Seibu Haijima Line. The Seibu Yamaguchi Line, also known as the Leo Liner, connects Seibu Yūenchi Station with Seibu Yūenchi amusement park and the Seibu Dome, home of the Saitama Seibu Lions baseball team. Ōmekaidō Station is listed as a connection to services on the JR Musashino Line at Shin-Kodaira Station, a short walk away.

The Tamako Line also provides access to the National Center of Neurology and Psychiatry[2] and the International Campus of Hitotsubashi Gakuen University[3] from Hagiyama and Hitotsubashi-Gakuen stations respectively.


The Tamako Railway opened the Kokubunji to Hagiyama section in 1928, and extended it to Musashi-Yamato in 1930, electrifying the entire section at 600 V DC at the same time. The company was absorbed into the Seibu Railway system on 12 March 1940.[4] In 1961, the line was extended to Seibu-Yūenchi, and the voltage increased to 1,500 V DC at the same time.


This article incorporates material from the corresponding article in the Japanese Wikipedia.

  1. Seibu Tamako line Timetable
  2. National Center of Neurology and Psychiatry: Access
  3. Hitotsubashi Gakuen University: Directions
  4. Terada, Hirokazu (July 2002). データブック日本の私鉄 [Databook: Japan's Private Railways]. Japan: Neko Publishing. pp. 200–202. ISBN 4-87366-874-3.
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