Adachi (足立区, Adachi-ku) is a special ward located in Tokyo Metropolis, Japan. It is located north of the heart of Tokyo. The ward consists of two separate areas: a small strip of land between the Sumida River and Arakawa River and a larger area north of the Arakawa River. The ward is bordered by the cities of Kawaguchi, Sōka and Yashio in Saitama and Katsushika, Sumida, Arakawa, and Kita in Tokyo.