Ayase Station (Tokyo)

 train station, metro station

JR East and Tokyo Metro (Tokyo Metro Chiyoda Line) station
Adachi-ku, Tokyo Ayase three-chome 1-1

Ayase Station is served by the following two lines.
- JR East Jōban Line
- Tokyo Metro Chiyoda Line

Ayase is currently the northern terminus of most Chiyoda Line services that do not continue to the Joban Line, as Kita-Ayase Station cannot accommodate trains longer than three cars. Tokyo Metro plans to expand Kita-Ayase Station to accommodate ten-car trains for through service to the Chiyoda Line beyond Ayase.

The official boundary between the Joban Line and Chiyoda Line is located east of Ayase Station, past the turnoff for the Kita-Ayase branch of the Chiyoda Line. However, the segment of the Chiyoda Line between Ayase and Kita-Senju Station is treated as part of the Joban Line for fare calculation purposes when passengers do not travel on Tokyo Metro beyond Kita-Senju.

Ayase Station also serves as a turnaround point for the Odakyu 60000 series MSE Romancecar service through the Chiyoda Line, and is sometimes used as a delivery point for Tokyo Metro trainsets by rail; JR Freight transports the trainsets to Ayase during midnight hours, where Tokyo Metro takes delivery and hauls them to the nearby Ayase depot.