Kansai region

 Osaka Prefecture

• Ceremony Sightseeing セレモニー観光
• Hankyū Hanshin Holdings Group
  Hankyu Hanshin Toho Group
  is a Japanese keiretsu centered around Hankyu Hanshin Holdings, H2O Retailing and Toho. The keiretsu historically included Sanwa Bank, now part of Mitsubishi UFJ Financial Group, and is still closely linked to MUFG....
  
  阪急阪神ホールディングスグループ
  • Hankyū Bus 阪急バス ^{S Pi}
    • Hankyū Sight Seeing Bus 阪急観光バス
  • Hanshin Electric Railway
    Hanshin Electric Railway
    is a Japanese private railway company of Hankyu Hanshin Toho Group that links Osaka and Kobe. It also owns the Hanshin Tigers baseball team.The second character for Osaka and the first character for Kobe combine to form the company name, 阪神, which can be read Han-shin.IC cards are accepted when...
    
     阪神電気鉄道 ^S
  • Ōsaka Airport Transport 大阪空港交通
• JR Group JRグループ
  • West JR Bus 西日本ジェイアールバス
• Kintetsu
  Kintetsu
  , named Kinki Nippon Railway Co., Ltd. in English until June 27, 2003, is a Japanese rail transit corporation commonly known as . It is the largest non-JR railway in Japan. Its complex network of lines connects Osaka, Kyoto, Nara, Nagoya, Tsu and Ise...
  
   Group 近鉄グループ
  • Kintetsu Bus 近鉄バス ^S
• Kokusai Kōgyō Group 国際興業グループ
  • Kokusai Kōgyō Ōsaka 国際興業大阪
• Kongō Motor (Kongō Bus) 金剛自動車 (金剛バス)
• Mizuma Railway 水間鉄道
• Nankai
  Nankai Electric Railway
  is a private railway in Japan. IC cards are accepted.Nankai Railway Company was founded on June 16, 1884, then became one of the companies that merge to form Kinki Nippon Railway Co., Ltd. in 1944. However Kin-nichi transferred the former Nankai Railway Company Lines to present Nankai Electric...
  
   Group 南海グループ
  • Kansai Airport Transportation 関西空港交通
  • Nankai Bus 南海バス
    • Nankai Wing Bus Kanaoka 南海ウイングバス金岡
    • Nankai Wing Bus Nanbu 南海ウイングバス南部
• Nihon Kōtsū 日本交通
  • Nikkō City Bus 日交シティバス
• Nihonjō Taxi 日本城タクシー
• Ōsaka Municipal Transportation Bureau
  Osaka Municipal Transportation Bureau
  Osaka Municipal Transportation Bureau is a public department of transportation of the city of Osaka, Japan, which operates the municipal subway lines, the New Tram and city buses.-Current:...
  
   (Ōsaka City Bus) 大阪市交通局 (大阪市営バス) ^{S Pi}
  • Ōsaka Transportation Promotion 大阪運輸振興 ^S
• Takatsuki City Transportation Division 高槻市交通部 ^S

 Kyoto Prefecture

• Chūkyō Kōtsū 中京交通
• Hankyū Hanshin Holdings Group
  Hankyu Hanshin Toho Group
  is a Japanese keiretsu centered around Hankyu Hanshin Holdings, H2O Retailing and Toho. The keiretsu historically included Sanwa Bank, now part of Mitsubishi UFJ Financial Group, and is still closely linked to MUFG....
  
  阪急阪神ホールディングスグループ
  • Tango Kairiku Kōtsū 丹後海陸交通
• Kaya Fellow Line 加悦フェローライン
• Keihan
  Keihan Electric Railway
  is a Japanese railway operator in Osaka, Kyoto, and Shiga Prefectures. It is known as , or .-History:Keihan started its operation between Osaka and Kyoto in 1910. It was the first electric railway to connect these two cities, and the first line on the left bank of Yodo River...
  
   Group 京阪グループ
  • Keihan Bus 京阪バス ^S
    • Keihan City Bus 京阪シティバス ^S
    • Keihan Kyōto Kōtsū 京阪京都交通 ^S
    • Keihan Uji Bus 京阪宇治バス ^S
• Kyōto Bus 京都バス ^S
• Kyōto Kōtsū 京都交通
• Kyōto Municipal Transportation Bureau
  Kyoto Municipal Transportation Bureau
  is an agency of the city government of Kyoto, Japan that operates municipal subways and city buses within the city. Previously, it also operated trams and trolley buses.-Subway:The Kyoto Municipal Subway operates the following two lines:*Karasuma Line...
  
   (Kyōto City Bus) 京都市交通局 (京都市営バス) ^S
• Yasaka Bus ヤサカバス

 Hyogo Prefecture

• Akashi City Transportation Division (Akashi City Bus) 明石市交通部 (明石市営バス)
• Amagasaki City Transportation Bureau (Amagasaki City Bus) 尼崎市交通局 (尼崎市営バス) ^S
  • Amagasaki Transportation Business Promotion 尼崎交通事業振興 ^S
• Awaji Kōtsū 淡路交通
• Awaji Taxi 淡路タクシー
• Hakuro Taxi はくろタクシー
• Hankyū Hanshin Holdings Group
  Hankyu Hanshin Toho Group
  is a Japanese keiretsu centered around Hankyu Hanshin Holdings, H2O Retailing and Toho. The keiretsu historically included Sanwa Bank, now part of Mitsubishi UFJ Financial Group, and is still closely linked to MUFG....
  
  阪急阪神ホールディングスグループ
  • Hankyū Denen Bus 阪急田園バス ^S
  • Hanshin Bus 阪神バス ^S
  • Rokkō Maya Railway 六甲摩耶鉄道
  • Shintetsu Bus 神鉄バス ^S
• Himeji City Public Enterprise Bureau Transportation Division (Himeji City Bus) 姫路市企業局交通事業部 (姫路市営バス)
• Honshi Kaikyou Bus 本四海峡バス
• Itami City Transportation Bureau (Itami City Bus) 伊丹市交通局 (伊丹市営バス) ^S
• Kōbe Ferry Bus 神戸フェリーバス
• Kōbe Municipal Transportation Bureau
  Kobe Municipal Transportation Bureau
  is an agency of the city government of Kobe, Japan that operates municipal subways and city buses. Previously, it also operated city trams.*Kobe Municipal Subway**Seishin-Yamate Line**Kaigan Line*City Bus- Tram :...
  
   (Kōbe City Bus) 神戸市交通局 (神戸市営バス) ^S
  • Kōbe City Transportation Promotion 神戸交通振興 ^S
• Minato Kankō Bus (Kōbe) みなと観光バス
• Minato Kankō Bus (Minamiawaji) みなと観光バス

These two are unrelated.

• Sanyō Electric Railway
  Sanyo Electric Railway
  Sanyo Electric Railway Co., Ltd. is a Japanese private railway in western Hyōgo Prefecture...
  
   山陽電気鉄道 ^S
  • Kōbe Sanyō Bus 神戸山陽バス
• Shinki Bus神姫バス ^Pi
  • Shinki Green Bus 神姫グリーンバス
  • Shinki Zone Bus神姫ゾーンバス ^Pi
  • West Shinki ウエスト神姫
• Zentan Bus 全但バス

 Nara Prefecture

• Kintetsu
  Kintetsu
  , named Kinki Nippon Railway Co., Ltd. in English until June 27, 2003, is a Japanese rail transit corporation commonly known as . It is the largest non-JR railway in Japan. Its complex network of lines connects Osaka, Kyoto, Nara, Nagoya, Tsu and Ise...
  
   Group 近鉄グループ
  • Nara Kōtsū 奈良交通 ^Pi
    • NC Bus エヌシーバス ^Pi
• Yoshino Ōmine Kēburu Bus 吉野大峯ケーブル自動車

 Shiga Prefecture

• Keihan
  Keihan Electric Railway
  is a Japanese railway operator in Osaka, Kyoto, and Shiga Prefectures. It is known as , or .-History:Keihan started its operation between Osaka and Kyoto in 1910. It was the first electric railway to connect these two cities, and the first line on the left bank of Yodo River...
  
   Group 京阪グループ
  • Kojak Kōtsū (Kojak Bus) 江若交通 (江若バス)
• Seibu
  Seibu Railway
  is a conglomerate based in Tokorozawa, Japan, with principal business areas in railways, tourism and real estate. Seibu Railway's operations are concentrated in northwest Tokyo and Saitama Prefecture; the name "Seibu" is an abbreviation of "west Musashi," referring to the historic name for this area...
  
   Group 西武グループ
  • Ohmi Railway
    Ohmi Railway
    is a Japanese private railway company which operates in Shiga Prefecture, and a member of the Seibu group since 1943. The company is named after the Ōmi Province, the former name of the present-day Shiga. The railway is nicknamed by local users because of its noisy sound.- History :Ohmi Railway is...
    
     近江鉄道
    • Kokoku Bus 湖国バス
• Shiga Agent System シガ・エージェントシステム
• Shiga Bus 滋賀バス
• Shiga Kōtsū 滋賀交通
• Teisan Group 帝産グループ
  • Teisan Kankō Bus Shiga 帝産観光バス滋賀
  • Teisan Konan Kōtsū 帝産湖南交通
  • Teisan Taxi Shiga 帝産タクシー滋賀

 Wakayama Prefecture

• Arida Kōtsū 有田交通
• Arida Railway 有田鉄道
• Chūki Bus 中紀バス
• Daijyū Bus 大十バス
• Kintetsu
  Kintetsu
  , named Kinki Nippon Railway Co., Ltd. in English until June 27, 2003, is a Japanese rail transit corporation commonly known as . It is the largest non-JR railway in Japan. Its complex network of lines connects Osaka, Kyoto, Nara, Nagoya, Tsu and Ise...
  
   Group 近鉄グループ
  • Meikō Bus 明光バス
• Kōyasan Taxi 高野山タクシー
• Kumano Kōtsū 熊野交通
• Nankai
  Nankai Electric Railway
  is a private railway in Japan. IC cards are accepted.Nankai Railway Company was founded on June 16, 1884, then became one of the companies that merge to form Kinki Nippon Railway Co., Ltd. in 1944. However Kin-nichi transferred the former Nankai Railway Company Lines to present Nankai Electric...
  
   Group 南海グループ
  • Gobō Nankai Bus 御坊南海バス
  • Nankai Rinkan Bus 南海りんかんバス ^S
  • Wakayama Bus ^S 和歌山バス
    • Wakayama Bus Naga 和歌山バス那賀 ^S
• Ryūjin Jidōsha 龍神自動車
• Susami Kôtû すさみ交通

Chūgoku region

Chugoku region

The , also known as the , is the westernmost region of Honshū, the largest island of Japan. It consists of the prefectures of Hiroshima, Okayama, Shimane, Tottori and Yamaguchi. It has a population of about 7.8 million.- History :...

 Tottori Prefecture

• Hinomaru Bus 日ノ丸自動車 (日ノ丸バス)
  • Hinomaru Hire 日ノ丸ハイヤー
• Nihon Kōtsū (Nikkō Bus) 日本交通
• Tottori Jidōsha (Clover Bus) 鳥取自動車 (クローバーバス)

 Shimane Prefecture

• Hankyū Hanshin Holdings Group
  Hankyu Hanshin Toho Group
  is a Japanese keiretsu centered around Hankyu Hanshin Holdings, H2O Retailing and Toho. The keiretsu historically included Sanwa Bank, now part of Mitsubishi UFJ Financial Group, and is still closely linked to MUFG....
  
  阪急阪神ホールディングスグループ
  • Iwami Kōtsū 石見交通
• Ichibata
  Ichibata Electric Railway
  Ichibata Electric Railway Co., Ltd. is the name of two related, yet different companies in Shimane Prefecture, Japan. Ichibata Denki Tetsudō Kabushiki-gaisha was a railway operator until 2006, when it became a holding company of the Ichibata Group, spinning off its railway division to the newly...
  
   Group 一畑グループ
  • Ichibata Bus 一畑バス
  • Izumo Ichibata Kōtsū 出雲一畑交通
  • Matsue Ichibata Kōtsū 松江一畑交通
  • Oki Ichibata Kōtsū 隠岐一畑交通
  • Okuizumo Kōtsū 奥出雲交通
• Matsue City Traffic Office (Matsue City Bus) 松江市交通局 (松江市営バス)
• Muikaichi Kōtsū 六日市交通
• Oki Ama Kōtsū 隠岐海士交通
• Oki Kankō 隠岐観光
• Susanoo Kankou スサノオ観光
• Tanimoto Hire 谷本ハイヤー
• Yamato Kankō 大和観光

 Okayama Prefecture

• Arimoto Kankō Bus 有本観光バス
• Chūtetsu Bus 中鉄バス
  • Chūtetsu Mimasaka Bus 中鉄美作バス
  • Sōja Bus (Chūtetsu Sōja Bus) 総社バス (中鉄総社バス)
• Hinase Transportation (Bizen Bus) 日生運輸 (備前バス)
• Ikasa Tetsudō (Ikasa Bus) 井笠鉄道 (井笠バス)
  • Hokushin Bus 北振バス
• Kamo Kankō Bus 加茂観光バス
• Katsumada Kankō Bus 勝間田観光バス
• Minagi Kōtsū 美袋交通
• Rose Kankoh (Rose Bus) ロウズ観光 (ロウズバス)
• Ryōbi Holdings (Ryōbi Bus) 両備ホールディングス (両備バス)
  • Okayama Electric Tramway
    Okayama Electric Tramway
    The is a transportation company in Okayama City, Japan. The private company operates tram lines and bus lines.The company was founded in 1910, while their first tram line was opened in 1912. This is one of the few Japanese railway operators that maintain their original corporation names from the...
    
     (Okaden Bus) 岡山電気軌道 (岡電バス)
  • Okayama Kōtsū 岡山交通
  • Okayama Taxi 岡山タクシー
  • Tōbi Bus 東備バス
• Shimotsui Dentetsu (Shimoden Bus) 下津井電鉄 (下電バス)
  • Bihoku Bus 備北バス
  • Shimoden Tour Service シモデンツアーサービス
• Toyosawa Kōtsū 豊沢交通
• Uno Bus 宇野自動車 (宇野バス)

 Hiroshima Prefecture

• Angel Cab エンゼルキャブ
• Anzen Taxi 安全タクシー
• Chiyoda Taxi 千代田タクシー
• Chūgoku Bus 中国バス
• Daiichi Taxi 第一タクシー
• Hamadaya Taxi 浜田屋タクシー
• Hiroshima Bus 広島バス
• Hiroshima Electric Railway
  Hiroshima Electric Railway
  is a Japanese transportation company established on June 18, 1910, that operates streetcars and buses in and around Hiroshima Prefecture. It is known as for short....
  
   (Hiroden Bus) 広島電鉄 (広電バス)
  • Bihoku Kōtsū 備北交通
  • Geiyō Bus 芸陽バス
  • HD Nishi Hiroshima (Bon-Bus) エイチ・ディー西広島 (ボン・バス)
• Hiroshima Kōtsū 広島交通
  • Hirokō Kankō 広交観光
• Honshi Bus Kaihatsu 本四バス開発
• Innoshima Unyu (Innoshima Bus) 因の島運輸 (因の島バス)
• Iwami Tour イワミツアー
• JR Group JRグループ
  • Chūgoku JR Bus 中国ジェイアールバス
• Jūban Kōtsū 十番交通
• Kake Kōtsū 加計交通
• Kure City Transportation Bureau (Kure City Bus) 呉市交通局 (呉市営バス)
• Mibu Kōtsū 壬生交通
• Mihara City Transportation Bureau (Mihara City Bus) 三原市交通局 (三原市営バス)
• Miyajima Kōtsū 宮島交通
• Nōmi Bus 能美バス
• Ōasa Kōtsū (Hope Bus) 大朝交通 (ホープバス)
• Onomichi City Transportation Bureau (Onomichi City Bus) 尾道市交通局 (尾道市営バス)
• Ōtake Kōtsū Taxi 大竹交通タクシー
• Ōtake Taxi 大竹タクシー
• Saijō Kōtsū (Rainbow Bus) 西城交通 (レイボーバス)
• Saiki Kōtsū 佐伯交通
• Sandankyō Kōtsū 三段峡交通
• Sanyō Bus さんようバス
• Sasaki Kankō ささき観光
• Setouchi Sankō 瀬戸内産交
• Shōwa Taxi 昭和タクシー
• SK Corporation 総合企画コーポレーション
• Tomotetsudō (Tomotetsu Bus) 鞆鉄道 (トモテツバス)
• Toyohira Kōtsū 豊平交通
• Tsuda Kōtsū 津田交通
• Yae Taxi 八重タクシー
• Yaguchi Taxi やぐちタクシー
• Yasuura Kōtsū 安浦交通

 Yamaguchi Prefecture

• Funaki Railway (Sentetsu Bus) 船木鉄道 (船鉄バス)
• Iwakuni City Transportation Bureau (Iwakuni City Bus) 岩国市交通局 (岩国市営バス)
• Kintetsu
  Kintetsu
  , named Kinki Nippon Railway Co., Ltd. in English until June 27, 2003, is a Japanese rail transit corporation commonly known as . It is the largest non-JR railway in Japan. Its complex network of lines connects Osaka, Kyoto, Nara, Nagoya, Tsu and Ise...
  
   Group 近鉄グループ
  • Bōchō Kōtsū (Bōchō Bus) 防長交通 (防長バス)
• Sanden Kōtsū サンデン交通
  • Blue Line Kōtsū ブルーライン交通
• Ube City Transportation Bureau (Ube City Bus) 宇部市交通局 (宇部市営バス)

Shikoku region

Shikoku

is the smallest and least populous of the four main islands of Japan, located south of Honshū and east of the island of Kyūshū. Its ancient names include Iyo-no-futana-shima , Iyo-shima , and Futana-shima...

 Tokushima Prefecture

• Ichiba Kōtsū 市場交通
• Komatsushima City Transportation Division (Komatsushima City Bus) 小松島市運輸部 (小松島市営バス)
• Kotoden
  Takamatsu-Kotohira Electric Railroad
  The is a transportation company in Kagawa Prefecture, which is on the island of Shikoku, Japan. With headquarters in Takamatsu, the company operates three passenger railway lines, as well as bus subsidiaries. It was established on November 1, 1943...
  
   Group ことでんグループ
  • Tokushima Seibu Kōtsū 徳島西部交通
• Mima Kankō Bus 美馬観光バス
• Nankai
  Nankai Electric Railway
  is a private railway in Japan. IC cards are accepted.Nankai Railway Company was founded on June 16, 1884, then became one of the companies that merge to form Kinki Nippon Railway Co., Ltd. in 1944. However Kin-nichi transferred the former Nankai Railway Company Lines to present Nankai Electric...
  
   Group 南海グループ
  • Tokushima Bus 徳島バス
    • Shikoku Kōtsū 四国交通
    • Tokushima Bus Anan 徳島バス阿南
    • Tokushima Bus Nanbu 徳島バス南部
• Naruto City Public Enterprise Bureau Transportation Division (Naruto City Bus) 鳴門市企業局運輸事業課 (鳴門市営バス)
• Tokushima City Transportation Bureau (Tokushima City Bus) 徳島市交通局 (徳島市営バス)

 Kagawa Prefecture

• JR Group JRグループ
  • JR Shikoku Bus ジェイアール四国バス
• Kotoden
  Takamatsu-Kotohira Electric Railroad
  The is a transportation company in Kagawa Prefecture, which is on the island of Shikoku, Japan. With headquarters in Takamatsu, the company operates three passenger railway lines, as well as bus subsidiaries. It was established on November 1, 1943...
  
   Group ことでんグループ
  • Kotoden Bus ことでんバス
• Shikoku Kousoku Bus
  Shikoku Kosoku Bus
  is a bus company in Kagawa Prefecture, Japan. The company operates only expressway route buses.-Expressway Buses runs midnight:*For Tokyo**Shinjuku Line ; servicing it in collaboration with Nishi Tokyo Bus*For Fukuoka**Fukuoka Line ; servicing it in...
  
   四国高速バス
• Kotosan Corporation (Kotosan Bus) 琴平参宮電鉄 (琴参バス)
• Ōkawa Bus 大川自動車
• Onigashima Kankō Jidōsha 鬼ヶ島観光自動車

The smallest operator in Japan, with 2 buses.

• Shōdoshima Bus 小豆島バス
• Takamatsu Express (Foot Bus) 高松エクスプレス (フットバス)

 Ehime Prefecture

• Iyo Railway
  Iyo Railway
  The is a transportation company in Matsuyama, Japan. The company or its lines are commonly known as . The private company operates railway, tram, and bus lines, and is a core company of Iyotetsu Group, which also operates other business such as department stores and travel agencies.-History:The...
  
   伊予鉄道
  • Iyotetsu Nanyo Bus 伊予鉄南予バス
• Setouchi Bus 瀬戸内運輸 (せとうちバス)
  • Setouchi Shūsō Bus せとうち周桑バス
  • Setonaikai Kōtsū 瀬戸内海交通
• Shimanami-Bus Development しまなみバス開発
• Uwajima Bus 宇和島自動車 (宇和島バス)

 Kochi Prefecture

• Kōch Ekimae Kankō 高知駅前観光
• Kōchiken Kōtsū 高知県交通
  • Kenkō Hokubu Kōtsū 県交北部交通
  • Kōchi Kōryō Kōtsū 高知高陵交通
  • Kōchi Seinan Kōtsū 高知西南交通
  • Kōchi Tōbu Kōtsū 高知東部交通
• Kōnan Kankō Jidōsha 高南観光自動車
• Kuroiwa Kankō 黒岩観光
• Reihoku Kankō Zidōsha 嶺北観光自動車
• Tosa Electric Railway
  Tosa Electric Railway
  The is a transportation company in Kōchi City, Japan. The private company operates tram and bus lines. It also operates as the agency of All Nippon Airways in Kōchi Prefecture....
  
   土佐電気鉄道
  • Tosaden Dream Service 土佐電ドリームサービス

Kyūshū region

Kyushu

is the third largest island of Japan and most southwesterly of its four main islands. Its alternate ancient names include , , and . The historical regional name is referred to Kyushu and its surrounding islands....

 Fukuoka Prefecture

• Amagi Kankō Bus 甘木観光バス
• Chikuhō Kankō Bus 筑豊観光バス
• Horikawa Bus 堀川バス
• JR Group JRグループ
  • JR Kyūshū Bus ジェイアール九州バス
• Kitakyūshū City Transportation Bureau (Kitakyūshū City Bus) 北九州市交通局 (北九州市営バス)
• Nishitetsu
  Nishi-Nippon Railroad
  The , also called or NNR, is one of Japan's "Big 16" private railroad companies. With headquarters in Fukuoka, it operates local and highway buses, supermarkets, real-estate and travel agencies, as well as railways in Fukuoka Prefecture. In addition, from 1950 to 1972, the company owned the Lions...
  
   Group 西鉄グループ
  • Kyūshū Kyūkō Bus 九州急行バス
  • Nishi-Nippon Railroad
    Nishi-Nippon Railroad
    The , also called or NNR, is one of Japan's "Big 16" private railroad companies. With headquarters in Fukuoka, it operates local and highway buses, supermarkets, real-estate and travel agencies, as well as railways in Fukuoka Prefecture. In addition, from 1950 to 1972, the company owned the Lions...
    
     (Nishitetsu Bus) 西日本鉄道 (西鉄バス)
    • Nishitetsu Bus Chikuhō 西鉄バス筑豊
    • Nishitetsu Bus Futsukaichi 西鉄バス二日市
    • Nishitetsu Bus Kitakyūshū 西鉄バス北九州
    • Nishitetsu Bus Kurume 西鉄バス久留米
    • Nishitetsu Bus Munakata 西鉄バス宗像
    • Nishitetsu Bus Ōmuta 西鉄バス大牟田
    • Nishitetsu Highway Bus 西鉄高速バス
    • Nishitetsu Kankō Bus 西鉄観光バス

Nishitetsu Bus is the largest operator in Japan. It owns the fleet of 2,083 buses, or 3,100 by the entire group.

• Shōwa Bus 昭和自動車 (昭和バス)
• Taiyō Kōtsū 太陽交通
• Techno Kankō Bus テクノ観光バス
• Ukico ウキコ

 Saga Prefecture

• Nishitetsu
  Nishi-Nippon Railroad
  The , also called or NNR, is one of Japan's "Big 16" private railroad companies. With headquarters in Fukuoka, it operates local and highway buses, supermarkets, real-estate and travel agencies, as well as railways in Fukuoka Prefecture. In addition, from 1950 to 1972, the company owned the Lions...
  
   Group 西鉄グループ
  • Nishitetsu Bus Saga 西鉄バス佐賀
• Saga City Transportation Bureau (Saga Shiei Bus) 佐賀市交通局 (佐賀市営バス)
• Yūtoku Motor 祐徳自動車

 Nagasaki Prefecture

• Gotō Motor (Gotō Bus) 五島自動車 (五島バス)
• Hayata Shōten (Hirado Bus) 早田商店 (平戸バス)
• Iki Kōtsū 壱岐交通
• Ikitsuki Motor (Ikitsuki Bus) 生月自動車 (生月バス)
• Maruhama Sangyō (Narujima Bus) 丸浜産業 (奈留島バス)
• Nagasaki Motor Bus (Nagasaki Bus) 長崎自動車 (長崎バス)
• Ojika Kōtsū 小値賀交通
• Ōkawa Rikuun (Hirado Kankō Bus) 大川陸運 (平戸観光バス)
• Saihi Motor (Saihi Bus) 西肥自動車 (西肥バス)
• Saikai Kōtsū さいかい交通
• Sasebo City Transportation Bureau (Sasebo City Bus) 佐世保市交通局 (佐世保市営バス)
• Shimabara Railway (Shimatetsu Bus) 島原鉄道 (島鉄バス)
• Transportation Bureau of Nagasaki Prefecture (Nagasaki Ken-ei Bus) 長崎県交通局 (長崎県営バス)
• Tsushima Kōtsū 対馬交通
• Uku Kankō Bus 宇久観光バス

 Kumamoto Prefecture

• Kyūshū Sankō Bus 九州産交バス
  • Sankō Bus 産交バス
• Kumamoto Electric Railway
  Kumamoto Electric Railway
  The is the public transport company in Kumamoto Prefecture, Japan. It is abbreviated as or . The company was founded in 1909. The company operates railway and bus lines...
  
   熊本電気鉄道
• Kumamoto City Transportation Bureau
  Kumamoto City Transportation Bureau
  The is a public transportation authority of Kumamoto City, Japan. The bureau operates trams and bus lines.The city government has operated tram lines since 1924 and bus lines since 1927, but the current transportation bureau was formed in 1944....
  
   (Kumamoto City Bus) 熊本市交通局 (熊本市営バス)
• Kumamoto Bus 熊本バス

 Oita Prefecture

• Nishitetsu
  Nishi-Nippon Railroad
  The , also called or NNR, is one of Japan's "Big 16" private railroad companies. With headquarters in Fukuoka, it operates local and highway buses, supermarkets, real-estate and travel agencies, as well as railways in Fukuoka Prefecture. In addition, from 1950 to 1972, the company owned the Lions...
  
   Group 西鉄グループ
  • Hita Bus 日田バス
  • Kamenoi Bus 亀の井バス
• Ōita Bus 大分バス
  • Kyūshin Kōtsū 臼津交通
  • Ōno Kōtsū 大野交通
  • Takeda Kōtsū 竹田交通
• Ōita Kōtsū 大分交通
  • Daikō Hokubu Bus 大交北部バス
  • Kunisaki Kankō Bus 国東観光バス
  • Kusu Kankō Bus 玖珠観光バス

 Miyazaki Prefecture

• Iwasaki Group いわさきグループ
  • Sanshū Motor 三州自動車
• Miyazaki Kōtsū 宮崎交通

 Kagoshima Prefecture

• A” Line マルエーフェリー
• Daiwa Bus 大和バス
• Iwasaki Group いわさきグループ
  • Amami Iwasaki Sangyō 奄美岩崎産業
  • Iwasaki Bus Network いわさきバスネットワーク
  • Kagoshima Kōtsū 鹿児島交通
  • Ōsumi Kōtsū Network 大隅交通ネットワーク
  • Tanegashima Yakushima Kōtsū 種子島・屋久島交通
• Kagoshima City Transportation Bureau
  Kagoshima City Transportation Bureau
  The is a public transportation authority of Kagoshima City, Japan. The bureau operates trams and bus lines. From April 1, 2005, together with Nangoku Kōtsū and JR Kyūshū Bus, the bureau introduced RapiCa, a smart card ticketing system....
  
   (Kagoshima City Bus) 鹿児島市交通局 (鹿児島市営バス)
• Kakeroma Bus 加計呂麻バス
• Michinoshima Kōtsū 道の島交通
• Minami Rikuun (Minami Bus) 南陸運 (南バス)
• Nangoku Kōtsū 南国交通
• Okinoerabu Bus Enterprises (Oki Bus) 沖永良部バス企業団 (沖バス)
• Satsumasendai City Industrial Economy Division Commerce And Industry Promotion Section (Satsumasendai City Bus) 薩摩川内市産業経済部商工振興課 (薩摩川内市営バス)
• Tokunoshima Sōgō Rikuun (Sōgō Bus) 徳之島総合陸運 (総合バス)

 Okinawa Prefecture

• Azuma Un'yu (Azuma Bus) 東運輸 (東バス)
• Hokubu Kankō Bus 北部観光バス
• Iejima Kankō Bus 伊江島観光バス
• Iriomotejima Kōtsū 西表島交通

The southernmost operator.

• Kohama Kōtsū コハマ交通
• Kyōwa Bus 共和バス
• Miyako Kyōei Bus 宮古協栄バス
• Naha Bus 那覇バス
• Okinawa Bus 沖縄バス
• Ryūkyū Bus Kōtsū 琉球バス交通
• Tōyō Bus 東陽バス
• Yachiyo Bus Taxi 八千代バス・タクシー
• Yonaguni Kōtsū ヨナグニ交通

See also