The Seattle Dojo is located at 1510 S. Washington in the Squire Park neighborhood of Seattle, Washington. It is the oldest judo dojo in the continental United States, having been founded sometime before 1907 in what is today the International District.
On October 17, 1903, a Kodokan leader named Yoshiaki Yamashita gave demonstrations of judo at the Seattle Theatre. Witnesses included prominent local businessmen and journalists. This success inspired Seattle's Japanese immigrant community to organize its own judo dojo. The pioneer of the Seattle Dojo appears to have been Iitaro Kono (or Kano), a Kodokan judo black belt who arrived in Seattle on May 20, 1903. He remained in Seattle until at least September 18, 1909, when he participated in a judo demonstration for the Alaska-Yukon-Pacific Exposition. During the 1910s, Kono also started judo clubs in Spokane and Chicago.
The man who made Seattle Dojo famous, however, was professional wrestler Tokugoro Ito, who made the club his headquarters during his stay in Seattle (1907–1911). Other wrestlers associated with Seattle Dojo included Eitaro Suzuki, who wrestled for Japan during the 1932 Olympics, and Kaimon Kudo, a popular professional wrestler of the 1930s and 1940s.
Until 1934, the Seattle Dojo was located in the basements of various Japantown hotels. The current structure was built during the spring of 1934. Its architect was Kichio Allen Arai, whose better known designs include the Seattle Buddhist Church, the Yakima Buddhist Church, the Idaho-Oregon Buddhist Temple, and the White River Buddhist Temple.