:''For other uses, see
Tōkaidō (disambiguation)

Provincial Map of Japan in the 8th Century AD
The was originally an old
Japanese geographical region that made up the
gokishichidō system and was situated along the southeastern edge of
Honshū, its name literally means 'Eastern Sea Way'. It also refers to a series of roads that connected the capitals (国府 ''kokufu'') of each of the provinces that made up the region. The original Tōkaidō consisted of the following fifteen ancient provinces:
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Iga Province
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Ise Province
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Shima Province
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Owari Province
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Mikawa Province
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Tōtomi Province
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Suruga Province
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Kai Province
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Izu Province
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Sagami Province
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Musashi Province
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Awa Province
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Kazusa Province
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Shimousa Province
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Hitachi Province