Hitotsubashi (一ツ橋) is an administrative and postal area of Chiyoda, Tokyo, Japan. It was formerly Kanda-ku. Many establishments are located in Hitotsubashi. In Hitotsubashi 1-chōme are the headquarters of the Mainichi Shimbun. In 2-chōme are Hitotsubashi University Chiyoda Campus,[1] Josuikaikan Hall, alumni hall of Hitotsubashi University,[2][3] Kyoritsu Women's University,[4] Iwanami Shoten,[5] Shogakukan, and Shueisha, as well as Hitotsubashi Group.[citation needed] | ||||||