is an interchange passenger railway station located in Wakà Â, Saitama, Japan, operated by the private railway operator Tà Âbu Railway and Tokyo subway operator Tokyo Metro. It is the only Tokyo Metro station located in Saitama Prefecture. It is the westernmost station in the Tokyo subway network, and the northernmost Tokyo Metro station ( on the Toei network is farther north).
Wakà Âshi Station is served by the Tà Âbu Tà Âjà  Line from to and in Saitama Prefecture. It also forms the northern terminus of the Tokyo Metro Yurakucho Line and Tokyo Metro Fukutoshin Line, with some trains continuing northward on the Tobu Tojo Line to and . Trains continuing onto the Tobu Tojo Line from Tokyo Metro lines all change drivers here: Tobu Railway drivers take over trains from Tokyo and Tokyo Metro drivers take over trains towards Tokyo. Located between Narimasu and Asaka stations, it is from the Ikebukuro terminus.
The station consists of two island platforms serving four tracks. The two platforms, 2 and 3, used by Tokyo Metro services were equipped with chest-high platform edge doors in April 2012, with operation commencing in July 2012. Similar platform edge doors were installed on the TÃ Âbu platforms, 1 and 4, in February 2016, and scheduled to be brought into operation from 26 March.
The station opened on February 1, 1934, as on the Tà Âjà  Railway Line. Though originally written in hiragana, the station name was written in kanji (æ°åÂÂ駠) from July 21, 1934 onwards. On October 1, 1951, the station was renamed . On December 20, 1970, it was renamed Wakà Âshi Station.
Fukutoshin Line services started on June 14, 2008.
From March 17, 2012, station numbering was introduced on the Tà Âbu Tà Âjà  Line, with Wakà Âshi Station becoming "TJ-11".
Chest-height platform edge doors were added to platforms 2 and 3 in April 2012, with operation commencing in July 2012.
Through-running to and from and via the Tokyu Toyoko Line and Minatomirai Line commenced on 16 March 2013.
Effective the timetable revision on 18 March 2023, through services onto the Sagami Railway commenced courtesy of the Tokyu and Sotetsu Shin-yokohama Line. Most southbound services routing through Hiyoshi on the Tokyu Shin-yokohama Line continue as far south as Ebina Station on the Sà Âtetsu Main Line or Shà Ânandai Station on the Sà Âtetsu Izumino Line.
In fiscal 2019, the TÃ Âbu portion of the station was used by an average of 180,819 passengers daily. The Tokyo Metro portion of the station was used by an average of 192,132 passengers daily.
The following long-distance express bus services operate from the south side of the station.