| Hokkaido Region |
- International ports
- Tomakomai Port, Muroran Port
- Key ports
- Wakkanai Port, Monbetsu Port, Abashiri Port, Nemuro Port, Kushiro Port, Tokachi Port, Hakodate Port, Otaru Port, Ishikari Bay New Port, Rumoi Port
|
| Tohoku Region |
- International ports
- Sendai Shiogama Port
- Key ports
-
Aomori Port, Mutsu Ogawahara Port, Hachinohe Port, Kuji Port, Miyako Port, Kamaishi Port, Ofunato Port, Noshiro Port, Akita Port, Funakawa Port, Sakata Port, Soma Port, Onahama Port
|
| Kanto Region |
- International strategical ports
- Keihin Port (Tokyo Port, Yokohama Port, Kawasaki Port)
- International ports
- Chiba Port
- Key ports
- Ibaraki Port, Kashima Port, Kisarazu Port, Yokosuka Port
|
| Chubu Region |
- International ports
- Niigata Port, Fushiki Toyama Port
- Key ports
- Naoetsu Port, Ryotsu Port, Ogi Port, Nanao Port, Kanazawa Port, Tsuruga Port, Tagonoura Port, Omaezaki Port, Kinuura Port, Mikawa Port, Owase Port, Tsu Matsuzaka Port
|
| Kinki Region |
- International strategical ports
- Hanshin Port (Osaka Port, Kobe Port)
- International ports
- Hanshin Port (Sakai-Semboku Port), Wakayama Shimotsu Port, Himeji Port
- Key ports
- Maizuru Port, Hannan Port, Amagasaki Nishinomiya Ashiya Port, Higashiharima Port, Hidaka Port
- Other ports
- Fukura Port
|
| Chugoku Region |
- International ports
- Mizushima Port, Hiroshima Port, Tokuyama Shimotsu Port, Shimonoseki Port
- Key ports
- Okayama Port, Uno Port, Fukuyama Port, Onomichi Itozaki Port, Kure Port, Tottori Port, Sakaiminato Port, Hamada Port, Misumi Port, Saigo Port, Onoda Port, Ube Port, Mitajiri Nakazeki Port, Iwakuni Port
- Other ports
- Hibi Port
|
| Shikoku Region |
- Key ports
- Tokushima Komatsujima Port, Tachibana Port, Sakaide Port, Takamatsu Port, Uwajima Port, Matsuyama Port, Imabari Port, Toyo Port, Niihama Port, Mishima Kawanoe Port, Susaki Port, Sukumowan Port
- Other ports
- Naoshima Port
|
| Kyushu Region |
- International ports
- Kitakyushu Port, Hakata Port
- Key ports
- Kanda Port, Miike Port, Karatsu Port, Imari Port, Nagasaki Port, Sasebo Port, izuhara Port, Gonoura Port, Fukue Port, Kumamoto Port, Yatsushiro Port, Misumi Port, Nakatsu Port, Beppu Port, Oita Port, Tsukumi Port, Saeki Port, Hososhima Port, Miyazaki Port, Aburatsu Port, Kagoshima Port, Shibushi Port, Sendai Port, Nishinoomote Port, Naze Port, Naha Port, Unten Port, Kinwan Port, Nakagusukuwan Port, Hirara Port, Ishigaki Port
|
