Tōkaidō may refer to: Taiheiyō Belt (also Tōkaidō corridor), the megalopolis in Japan extending from Ibaraki Prefecture to Fukuoka Prefecture Tokaido (company), a Japanese company that manufactures karate uniforms, belts, and related products Tōkaidō (region), a Japanese geographical term meaning both an ancient division of the country and the main road running through it Tokaido, a board game designed by Antoine Bauza Transit Tōkaidō (road), the most important of the Five Routes of the Edo period in Japan Tōkaidō Main Line, a major Japanese railway line of the Japan Railways Group network Tokaido Shinkansen, a Japanese high-speed rail line that is part of the nationwide Shinkansen network See also Tokai (disambiguation)