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JR Bus collectively refers to the bus operations of Japan Railways Group (JR Group) companies in Japan. JR Bus is operated by eight regional companies, each owned by a JR railway company. JR Bus companies provide regional, long distance, and chartered bus services.

The Ministry of Railways of Japan started its first bus operation in Aichi Prefecture in 1930 and gradually expanded bus routes. The Japanese National Railways (JNR), public corporation established in 1949, succeeded the bus operations, then called Kokutetsu Bus or JNR Bus. In 1987, JNR was divided into regional railway companies together with its bus operations. JR companies later separated their bus operations to subsidiaries in 1988 (JR East, JR Central, JR West), 2000 (JR Hokkaido), 2001 (JR Kyushu) and 2004 (JR Shikoku).

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  JR Hokkaidō bus 521-4956
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  JR Bus Tohoku 531-9452
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  JR Bus Kanto L534-97506
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  JR Tokai Bus 328-8902
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  Nishinihon JR Bus 537-1909
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  Chugoku JR Bus 534-5969
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  JR Shikoku Bus 531-2911
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  JR Kyushu Bus 521-21602

JR Bus Tohoku, JR Bus Kanto, JR Tokai Bus and Chugoku JR Bus share a common livery based on the JNR Bus livery.

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  JR Hokkaido Bus 644-5822
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  JR Bus Tohoku H654-02406
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  JR Bus Kanto H654-07417
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  JR Tokai Bus 747-05952
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  Nishinihon JR Bus 749-8913
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  Chugoku JR Bus 641-5906
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  JR Shikoku Bus 694-8950
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  JR Kyushu Bus 748-06558

• https://web.archive.org/web/20151203224900/http://www.kakuyasubus.jp/ (jointly operated by JR Bus companies for promotion of intercity buses) (in Japanese)