Jalur Utama Tōkaidō
nyaéta jalur Japan Railway (JR) pangsibukna, ngahubungkeun Stasion Tokyo jeung Kobe Station. Panjangna 589.5 km (366 miles), teu kaasup sababaraha jalur tambahan di kota-kota utama. Tōkaidō Shinkansen sajajar jeung jalur ieu.

Watesan "Jalur Utama Tōkaidō" geus dipaké saméméh aya Shinkansen: kiwari, sababaraha bagéan ngagunakeun ngaran nu béda, nu sacara resmi dipaké ku JR. Kiwari, taya kareta panumpang nu dioperasikeun sapanjang jalur ieu (salian ti kareta malam; tempo di handap), keur sakabéh rute perlu ganti kareta di sababaraha tempat.

Jalur Utama Tōkaidō dioperasikeun ku tilu parusahaan JR:
 East Japan Railway Company (Tokyo-Atami)
 Central Japan Railway Company (Atami-Maibara)
 West Japan Railway Company (Maibara-Kobe)

Data rute 

 East Japan Railway Company, Central Japan Railway Company, West Japan Railway Company
 Jarak total: 713.6 km (Tōkyō — Kōbe)
 éast Japan Railway Company
 104.6 km (Tōkyō — Atami)
 17.8 km (Shinagawa — Shin-Kawasaki — Tsurumi)
 20.6 km (Hamamatsuchō — Tōkyō Freight Terminal — Kawasaki Freight Terminal — Hama-Kawasaki)
 2.3 km (Tsurumi — Hacchō-Nawate)
 8.5 km (Tsurumi — Higashi-Takashima — Sakuragichō)
 2.7 km (Irie Signalbox — Shin-Kyō) (teu dipaké keur kareta penumpang)
 16.0 km (Tsurumi — Yokohama-Hazawa — Higashi-Totsuka)
 Central Japan Railway Company
 341.3 km (Atami — Maibara) (bagéan 3.3 km Kanayama — Nagoya dianggap Jalur Utama Chūō, sanajan Jalur Utama Chūō teu eureun di Otōbashi)
 5.0 km (Ōgaki — Mino-Akasaka)
 13.8 km (Ōgaki — (Shin-Tarui) — Sekigahara)
 West Japan Railway Company
 143.6 km (Maibara — Kōbe)
 3.3 km (Umekōji — Tambaguchi) (teu dipaké keur kereta penumpang)
 10.7 km (Suita — (Miyahara Switchyard) — Amagasaki) (bagéan ieu disebut ogé Jalur Hoppō)
 8.5 km (Suita — Umeda — Fukushima) (teu dipaké keur kareta penumpang; bagéan ieu disebut Umeda Freight Line)
 Japan Freight Railway Company
 First Type Railway Operation (holds éach lines and operate freight trains)
 6.2 km (Sannō Signalbox — Nagoya-Minato)
 8.7 km (Suita Signalbox — Ōsaka Freight Terminal)
 Second Type Railway Operation (borrows éach lines from other JR companies and operate freight trarins)
 97.8 km (Shinagawa — Atami)
 13.9 km (Shinagawa — Shin-Tsurumi Signalbox)
 12.9 km (Tōkyō Freight Terminal — Hama-Kawasaki)
 16.0 km (Tsurumi — Yokohama-Hazawa — Higashi-Totsuka)
 2.3 (Tsurumi — Hacchō-Nawate)
 11.2 km (Tsurumi — Shin-Kyō — Sakuragichō) (these lines are borrowed from JR éast)
 341.3 km (Atami — Maibara)
 10.7 km (Minami-Arao Signalbox — Sekigahara)
 1.9 km (Minami-Arao Signalbox — Mino-Akasaka) (these lines are borrowed from Central JR)
 139.0 km (Maibara — Kōbe) (via Hoppō Freight Line)
 3.3 km (Umekōji — Tambaguchi)
 8.5 km (Suita — Umeda — Fukushima) (these lines are borrowed from JR West)
 Rail gauge: 1,067 mm (3 ft 6 in)
 Stasion-stasion: 161 (teu kaasup stasion cabang di Shinagawa — Shin-Kawasaki jeung Ōgaki — Mino-Akasaka)
 JR éast: 34
 JR Central: 80
 JR West: 47
 Trek
 Tripel trek atawa leuwih
 83.9 km (Tōkyō — Odawara)
 98.1 km (Kusatsu — Kōbe)
 Trek ganda
 Odawara — Kusatsu
 Shinagawa — Shin-Kawasaki — Tsurumi
 Hamamatsuchō — Tōkyō Freight Terminal — Kawasaki Freight Terminal — Hama-Kawasaki
 Tsurumi — Hacchō-Nawate
 Tsurumi — Higashi-Takashima
 Tsurumi — Yokohama-Hazawa — Higashi-Totsuka
 Suita — Umeda
 Suita — (Miyahara Switchyard) — Amagasaki
 Trek tunggal
 Irie Signalbox — Shin-Kyō
 Higashi-Takashima — Sakuragichō
 Sannō Signalbox — Nagoya-Minato
 Ōgaki — Mino-Akasaka
 Ōgaki — (Shin-Tarui) — Sekigahara
 Umekōji — Tambaguchi
 Suita — Ōsaka Freight Terminal
 Umeda — Fukushima
 Electrification: All; 1,500 V DC (except Sannō Signalbox — Nagoya-Minato section)

Stasion-stasion

Daerah Tokyo 

Bagéan ieu dioperasikeun ku éast Japan Railway Company (JR éast).

Wewengkon Tōkai 
Jalur Tōkaidō antara Atami jeung Maibara dioperasikeun ku JR Central, ngawengku Tōkai region - Préféktur Shizuoka, Préféktur Aichi jeung Préféktur Gifu.

Jalur Cabang Mino-Akasaka

Jalur Cabang Shin-Tarui 
 Ōgaki - Shin-Tarui (Abandoned) - Sekigahara, 13.8 km (service km)

Wewengkon Kansai 
Bagéan kulon Jalur Utama Tōkaidō ti Maibara ka Kobe dioperasikeun ku JR West, tur  babarengan jeung pausahaan Urban Network di metropolitan Osaka-Kobe-Kyoto. Jalur ieu dibagi kana tilu bagéan - Biwako Line, JR Kyoto Line jeung JR Kobe Line. Jalur Biwako kaasup segmen Jalur Utama Hokuriku, sedengkeun Kosei Line, JR Takarazuka Line jeung Gakkentoshi Line kaasup kana jalur utama.

Biwako Line 

The section of the line between Maibara and Kyoto is known as the Biwako Line. The line also includes the section of the Hokuriku Main Line between Maibara and Nagahama, where some Kyoto-bound trains originate.

JR Kyoto Line 

The section of the Tōkaidō Main Line between Kyoto and Osaka is known as JR Kyoto Line. Biwako Line and Kosei Line trains continue on the JR Kyoto Line, and continue west to the JR Kobe Line at Osaka.

JR Kobe Line 

The westernmost portion of the Tōkaidō Main Line, between Osaka and Kobe is part of the JR Kobe Line, which continues west to Himeji Station on the Sanyō Main Line. Although Kobe is the official terminus of the Tōkaidō Main Line, most trains continue to Nishi-Akashi, Himeji and beyond.

Sannomiya in central Kobe is the major hub on this section, serving the city's main business and entertainment district, and provides connections to other private railway lines and Kobe Airport.

Trains 
In addition to standard local, rapid, and special rapid service trains, the Tōkaidō Main Line also hosts a number of limited express services.

Daytime trains 
 Biwako Express (Maibara-Osaka)
 Fujikawa (Shizuoka-Fuji)
 Haruka (Maibara-Kansai International Airport)
 Hida (Nagoya-Gifu, Gifu-Osaka)
 Odoriko (Tokyo-Atami-(Itō Line)-Itō-(Izu Kyuko)-Shimoda)  (Tokyo-Mishima-(Izu-Hakone Railway Sunzu Line)-Shuzenji)
 Super-view Odoriko, Resort Odoriko, Fleur Odoriko (Tokyo-Atami-(Itō Line)-Itō-(Izu Kyuko)-Shimoda)
 Shinano (Nagoya-Osaka)
 Shirasagi (Nagoya-Maibara)

Overnight trains 
Most overnight trains on the Tōkaidō Line go from Tokyo to western Honshū, or even as far as Kyūshū.

 Fuji (Tokyo-Ōita)
 Ginga (Tokyo-Osaka)
 Hayabusa (Tokyo-Kumamoto)
 Moonlight Nagara (Tokyo-Ōgaki) (Rapid service with reserved séats)
 Sunrise Izumo (Tokyo-Izumo via Okayama)
 Sunrise Seto (Tokyo-Takamatsu)

Discontinued trains 
 Overnight train Sakura (Tokyo-Nagasaki (discontinued on March 2005), Tokyo- (discontinued on 1999))
 Overnight train Izumo (Tokyo-Izumo via Tottori), discontinued March 2006
 Limited express Wide View Tōkai (Tokyo-Shizuoka), discontinued March 2007

Fleets for non-express services

Tokyo area 
 185 series
 211 series
 E217 series (Tokyo - Atami)
 E231 series (Tokyo - Numazu)

Tōkai area 
 117 series (Hamamatsu - Toyohashi, Ōgaki - Maibara)
 211 series
 311 series (Shizuoka - Gifu)
 313 series
 373 series (Atami - Shizuoka)
 KiHa75 series(Through service train for Taketoyo Line)

Kansai area 
 113 series(Through service train for Kusatsu Line)
 117 series(Through service train for Kusatsu Line)
 207 series
 321 series
 221 series(Rapid/New Rapid services)
 223 series(Rapid/New Rapid services)

Tōkaidō