Tōsandō

Tōsandō (東山道) is a Japanese geographical term. It means both an ancient division of the country and the main road running through it. It is part of the Gokishichidō system. It was situated along the central mountains of northern Honshu, specifically the Tōhoku region.

This term also refers to a series of roads that connected the capitals (国府) of each of the provinces that made up the region.

The Tōsandō region encompasses eight ancient provinces.
 * Ōmi Province
 * Mino Province
 * Hida Province
 * Shinano Province
 * Kōzuke Province
 * Shimotsuke Province
 * Mutsu Province
 * Dewa Province

After 711 AD, Tōsandō was understood to include the Musashi province.