The Nankaido (南海道), literally meaning southern road was both an ancient region of Japan and a ancient road which comnected provincial capital in this region. As a region Nankaido included Kii province, Awaji province and the whole four provinces in Shikoku: Awa, Sanuki, Tosa and Iyo.

The road extend from Nara to the seacoast to the south on the Kii Peninsula of the island of Honshu in Japan and crossing the sea, extended to Yura (nowadays Sumoto) and then Shikoku.

See also

• provinces of Japan