East Japan Railway Company (東日本旅客鉄道株式会社 Higashi-Nihon Ryokaku Tetsudo Kabushiki-gaisha) is a major passenger railway company in Japan and one of the seven Japan Railways Group companies. The company name is officially abbreviated as JR East in English, and as JR Higashi-Nihon (JR東日本 Jeiāru Higashi-Nihon) in Japanese. The company's headquarters are in Yoyogi, Shibuya, Tokyo.
JR East was incorporated on 1 April 1987 after being spun off from the government-run Japanese National Railways (JNR). The spin-off was nominally "privatization", as the company was actually a wholly owned subsidiary of the government-owned JNR Settlement Corporation for several years, and was not completely sold to the public until 2002.
Following the breakup, JR East ran the operations on former JNR lines in the Greater Tokyo Area, the Tohoku region, and surrounding areas.
Its railway lines primarily serve Kanto and Tohoku regions, along with adjacent areas in Koshin'etsu region (Niigata, Nagano, Yamanashi) and Shizuoka prefectures.