The JR Tōzai Line (JR東西線, Jei-āru Tōzai-sen) is one of several commuter rail lines and services in the Osaka-Kobe-Kyoto Metropolitan Area, operated by West Japan Railway Company (JR West).

All stations on this line are in the city of Osaka, except for the western terminus in Amagasaki, Hyōgo Prefecture.

All eastbound trains continue past Kyobashi on the Gakkentoshi Line.

A permit to lay the track was given 10 years later, but the project stopped because of JNR's financial problems.

In 1988, after JNR privatized and split into Japan Railway companies, West Japan Railway Company formed a private-public entity called Kansai Rapid Railway Co., Ltd. (関西高速鉄道株式会社, Kansai kōsoku tetsudō kabushiki gaisha) with the prefectural governments of Osaka and Hyōgo, and the cities of Osaka and Amagasaki.