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Japan Railways

• Central Japan Railway Company (東海旅客鉄道 JR Central)
• East Japan Railway Company (東日本旅客鉄道 JR East)
• Hokkaido Railway Company (北海道旅客鉄道 JR Hokkaido)
• Kyushu Railway Company (九州旅客鉄道 JR Kyushu)
• Shikoku Railway Company (四国旅客鉄道 JR Shikoku)
• West Japan Railway Company (西日本旅客鉄道 JR West)
• Japan Freight Railway Company (日本貨物鉄道 JR Freight)

Maiores ferrovias privadas

Kanto

• Keihin Electric Express Railway 京浜急行電鉄 (京急 Keikyu)
• Keio Electric Railway 京王電鉄
• Keisei Electric Railway 京成電気鉄道
• Odakyu Electric Railway 小田急電鉄
• Sagami Railway 相模鉄道 (相鉄 Sotetsu)
• Seibu Railway 西武鉄道
• Tobu Railway 東武鉄道
• Tokyo Metro 東京地下鉄
• Tokyo Kyuko Electric Railway ou Tokyu Corporation 東京急行電鉄 (東急 Tokyu)

Chubu

• Nagoya Tetsudo 名古屋鉄道 (名鉄 Meitetsu)

Kansai

• Kintetsu Corporation 近畿日本鉄道 (近鉄 Kinki Nippon Railway)
• Hankyu Railway 阪急電鉄
• Hanshin Electric Railway 阪神電気鉄道
• Keihan Electric Railway 京阪電気鉄道
• Nankai Electric Railway 南海電気鉄道

Kyushu

• Nishi-Nippon Railroad 西日本鉄道 (西鉄 Nishitetsu)

Outras ferrovias privadas

Tōhoku

• Aomori
  • Konan Railway 弘南鉄道
  • Towada Sightseeing Electric Railway 十和田観光電鉄
  • Tsugaru Railway 津軽鉄道
• Fukushima
  • Fukushima Transport 福島交通

Kanto

• Ibaraki
  • Ibaraki Transport 茨城交通
  • Kantō Railway 関東鉄道
  • Kashima Railway 鹿島鉄道
• Gunma
  • Jomo Electric Railway 上毛電気鉄道
  • Joshin Electric Railway 上信電鉄
• Saitama
  • Chichibu Railway 秩父鉄道
• Chiba
  • Choshi Electric Railway 銚子電気鉄道
  • Shin-Keisei Electric Railway 新京成電鉄
  • Kominato Railway 小湊鉄道
  • Sohbu Nagareyama Electric Railway 総武流山電鉄
• Kanagawa
  • Hakone Tozan Railway 箱根登山鉄道
  • Izu Hakone Railway (Daiyuzan Line) 伊豆箱根鉄道 (大雄山線)

Chubu

• Yamanashi
  • Fuji Express 富士急行
• Toyama
  • Toyama Regional Railway 富山地方鉄道
  • Kurobe Gorge Railway 黒部峡谷鉄道
• Ishikawa
  • Hokuriku Railway 北陸鉄道
• Shizuoka
  • Enshu Railway 遠州鉄道
  • Izu Express 伊豆急行
  • Izu Hakone Railway (Linha Sunzu) 伊豆箱根鉄道 (駿豆線)
  • Shizuoka Railway 静岡鉄道
  • Oigawa Railway 大井川鐵道
• Nagano
  • Ueda Transport 上田交通
  • Matsumoto Electric Railway 松本電気鉄道
  • Nagano Electric Railway 長野電気鉄道
• Aichi
  • Tokai Transport Service 東海交通事業
  • Toyohashi Tetsudo 豊橋鉄道
• Mie
  • Sangi Railway 三岐鉄道

Kansai

• Shiga
  • Ohmi Railway 近江鉄道
• Kyoto
  • Eizan Electric Railway 叡山電鉄
  • Keifuku Electric Railway 京福電気鉄道
  • Sagano Sightseeing Railway 嵯峨野観光鉄道
• Osaka
  • Mizuma Railway 水間鉄道
  • Nose Electric Railway 能勢電気鉄道
• Hyogo
  • Hokushin Kyuko Electric Railway 北神急行電鉄
  • Kobe Electric Railway 神戸電気鉄道
  • Sanyo Electric Railway 山陽電気鉄道
• Wakayama
  • Kishu Railway 紀州鉄道

Chugoku

• Shimane
  • Ichibata Electric Railway 一畑電気鉄道

Shikoku

• Kagawa
  • Takamatsu Kotohira Electric Railway 高松琴平電気鉄道
• Ehime
  • Iyo Railway 伊予鉄道

Kyushu

• Kumamoto
  • Kumamoto Electric Railway 熊本電気鉄道
• Nagasaki
  • Shimabara Railway 島原鉄道

Ferrovias do terceiro setor

• Abukuma Express
• Aichi Circulate Railway
• Aizu Railway
• Akechi Railway
• Akita Nairiku Jukan Railway
• Amagi Railway
• Asa Kaigan Railway
• Blue Forest Railway
• Chizu Express
• Echizen Railway
• Heisei Chikuho Railway
• Hisatsu Orange Railway
• Hōjō Railway
• Hokkaidō Chihoku Highland Railway
• Hokuetsu Express
• Hokuso Railway
• IGR Iwate Galaxy Railway
• Ihara Railway
• Ise Railway
• Isumi Railway
• Kamioka Railway
• Kashima Seaside Railway
• Kita Kinki Tango Railway
• Kita Osaka Kyuko Railway
• Kobe Rapid Railway
• Kumagawa Railway
• Kurihara Den'en Railway
• Matsuura Railway
• Metropolitan Intercity Railway Company (Tsukuba Express)
• Miki Railway
• Minami Aso Railway
• Mizushima Seaside Railway
• Moka Railway
• Nagaragawa Railway
• Nagoya Seaside Rapid Railway (Linha Aonami)
• Nishikigawa Railway
• Noto Railway
• Sanriku Railway
• Senboku Rapid Railway
• Shibayama Railway
• Shigaraki Kougen Railway
• Shinano Railway
• Takachiho Railway
• Tarumi Railway
• Tenryū Hamanako Railway
• Tosa Kuroshio Railway
• Toyo Rapid Railway
• Yagan Railway
• Yamagata Railway
• Yokohama Minato Mirai Railway (Linha Kodomonokuni)
• Yuri Highland Railway
• Wakasa Railway
• Watarase Valley Railway