Seikan undersea tunnel entrance on Honshu side.
The first undersea Kanmon Railway Tunnel between Honshu and Kyushu islands built in 1936 - 1942.

This list of tunnels in Japan includes any road, rail or waterway tunnel in Japan.

TunnelOpeningStart locationEnd locationNote
Seikan Tunnel - Kaikyō Line13 March 1988HonshuHokkaidothe second longest railway tunnel in the world (~53.85 km)
Tsugaru Tunnel - Tsugaru-Kaikyō LineSotogahama-cho in AomoriImabetsu-cho in Aomori~5.88 km
Ichinoseki Tunnel - Tōhoku Shinkansen1982Ichinoseki Station9.730 km
Iwate-Ichinohe Tunnel - Tōhoku Shinkansen2002Morioka, IwateHachinohe, Aomori
Fukushima Tunnel - Tōhoku Shinkansen
Nasu Tunnel - Tōhoku Shinkansen19827.030 km
Sannohe Tunnel - Tōhoku Shinkansen2002Ninohe StationHachinohe Station8.250 km
Zaō Tunnel - Tōhoku Shinkansen
Daishimizu Tunnel - Jōetsu Shinkansen1982Gunma PrefectureNiigata Prefecture
Shimizu Tunnel - Jōetsu LineGunma PrefectureNiigata Prefecture
Shin-Shimizu Tunnel - Jōetsu Line
Tsukiyono Tunnel - Jōetsu Line7.295 km
Haruna Tunnel - Jōetsu Shinkansen
Nakayama Tunnel - Jōetsu Shinkansen
Shiozawa Tunnel - Jōetsu Shinkansen
Uonuma Tunnel - Jōetsu Shinkansen
Bentenyama Tunnel - Tōkaidō Shinkansen19631.316 km
Horikoshi Tunnel - Tōkaidō Shinkansen19631.415 km
Izumigoshi Tunnel - Tōkaidō Shinkansen19633.193 km
Kanbara Tunnel - Tōkaidō Shinkansen19684.934 km
Makinohara Tunnel - Tōkaidō Shinkansen19682.917 km
Nangosan Tunnel - Tōkaidō Shinkansen19615.170 km
Tanna Tunnel - Tōkaidō Shinkansen1934TokyoKobe
Shin-Tanna Tunnel (parallel to old Tanna Tunnel) - Tōkaidō Shinkansen
Nihonzaka Tunnel (rail) - Tōkaidō Shinkansen
Otowayama Tunnel - Tōkaidō Shinkansen5.045 km
Yui Tunnel - Tōkaidō Shinkansen19683.993 km
Haneda Tunnel - Tōkaidō Freight Line19736.472 km
Aioi Tunnel - Sanyō Shinkansen3.988 km
Aki Tunnel - Sanyō Shinkansen
Fukuoka Tunnel - Sanyō Shinkansen19758.488 km
Hosaka Tunnel - Sanyō Shinkansen19757.588 km
Kitakyushu Tunnel - Sanyō Shinkansen197511.747 km
Kobe Tunnel - Sanyō Shinkansen1972Shin-Kobe StationNishi-Akashi Station7.970km
Kanmon Tunnel - Sanyō Main Line1942Shimonoseki, YamaguchiKitakyūshū, Fukuoka
Shin-Kanmon Tunnel - Sanyō Shinkansen
Rokko Tunnel - Sanyō Shinkansen
Shin-Noborikawa Tunnel - Sekishō Line
Shin-Karikachi Tunnel - Nemuro Main Line
Senzan Tunnel - Senzan Line
Sengan Tunnel for #46 Road & JR Sengan Tunnel for Akita Shinkansen (Tazawako Line)
Rokujurigoe Tunnel - Tadami Line
Sasago Tunnel - Chūō Expressway1977Ōtsuki, YamanashiKōshū, Yamanashi
Enrei Tunnel - Chūō Main Line1983Okaya, NaganoShiojiri, Nagano~5.994 km
Ohara Tunnel - Iida Line
Akima Tunnel - Hokuriku Shinkansen1997TakasakiKaruizawa8.295 km
Gorigamine Tunnel - Hokuriku Shinkansen1997UedaChikuma15.175 km
Hokuriku Tunnel - Hokuriku Line
Kubiki Tunnel - Hokuriku Line
Nagasaki Tunnel - Nagasaki Main Line
Masaki Tunnel - Sanriku Railway
Akakura Tunnel - Hokuhoku Line
Nabetateyama Tunnel - Hokuhoku Line
Yakushitoge Tunnel - Hokuhoku Line
Kirigatake Tunnel - Hokuhoku Line
Karisaka Tunnel1998Chichibu, SaitamaYamanashi, Yamanashi
Shin-Kobe Tunnel (expressway)2012Kobe cityMinoya Junction8.5 km length
Yumesaki Tunnel2009Sakishima islandYumeshima island, Osaka2.138 km length
Kan-Etsu Tunnel - Kan-Etsu Expressway1991Minakami, GunmaYuzawa, Niigatathe longest road tunnel in Japan (~11 km)
Hida Tunnel - Tōkai-Hokuriku Expressway2008Hida city, GifuShirakawa village, Gifuthe second-longest road tunnel in Japan (~10.7 km)
Tokyo Bay Aqua-Line bridge-tunnel18 December 1997Kawasaki, KanagawaKisarazu, Chibathe third-longest road tunnel in Japan
Enasan Tunnel - Chūō Expressway1985NaganoNakatsugawa City, Gifuthe fourth-longest road tunnel in Japan (~8.6 km)
Ikuta Tunnel - Musashino Line1976Ikuta Station10.359 km

See also

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