Japan National Route 33

, also known as the Tosa Kaidō, is a Japanese highway on the island of Shikoku. It originates at the intersection of Route 32 and other arteries in the city of Kōchi (capital of Kōchi Prefecture) and terminates in the city of Matsuyama (capital of Ehime Prefecture), where it meets Route 11 and other national highways. Its history dates to the year 662. 