List of railway companies in Japan

Japan Railway

• Central Japan Railway Company
• East Japan Railway Company
• Hokkaido Railway Company
• Kyushu Railway Company
• Shikoku Railway Company
• West Japan Railway Company
• Japan Freight Railway Company

"Big 15" major private railways

• Hankyu Railway
• Hanshin Electric Railway
• Keihan Electric Railway
• Keihin Kyuko Electric Railway
• Keio Electric Railway
• Keisei Electric Railway
• Kinki Nippon Railway (Kintetsu)
• Nagoya Railroad (Meitetsu)
• Nankai Electric Railway
• Nishi-Nihon Railway
• Odakyu Electric Railway
• Sagami Railway
• Seibu Railway
• Tobu Railway
• Tokyo Kyuko Electric Railway

Other private railways

• Eizan Electric Railway
• Kishu Railway
• Kobe Electric Railway
• Mizuma Railway
• Nose Electric Railway
• Ohmi Railway
• Sanyo Electric Railway

Third-Sector railways

• Asa Kaigan Railway
• Chizu Express
• Hojo Railway
• Hokuetsu Express
• Ihara Railway
• Ise Railway
• Kita Kinki Tango Railway
• Kobe Rapid Railway
• Kurihara Den'en Railway
• Miki Railway
• Nishikigawa Railway
• Noto Railway
• Shigaraki Kougen Railway
• Tosa Kuroshio Railway
• Wakasa Railway

Subways

• Kobe Municipal Transportation Bureau (Kobe Municipal Subway)
• Kyoto Municipal Transportation Bureau (Kyoto Municipal Subway)
• Nagoya City Transportation Bureau (Nagoya Subway)
• Teito Rapid Transit Authority (Tokyo Metro)
• Osaka Municipal Transportation Bureau (Osaka Municipal Subway)
• Tokyo Metropolitan Bureau of Transportation

Monorails

• Inuyama Monorail
• Kitakyushu Monorail
• Maihama Resort Line
• Osaka Monorail
• Tama Toshi Monorail
• Tokyo Monorail
• Yui Rail

Trams

• Hankai Tramway
• Hiroshima Electric Railway
• Toyohashi Tramway

New transit systems

• Aichi Rapid Transit
• Hiroshima Rapid Transit
• Kobe New Transit (Portliner, Rokkoliner)
• Nagoya Guideway Bus
• New Tram (Nanko Port Town Line)
• Osakako Transportation System (OTS)
• Saitama Shintoshi Transit
• Skyrail Service
• Tokadai New Transit
• Yokohama Shintoshi Transit
• Yurikamome