Ogawamachi, or formally Kanda-Ogawamachi, is a district in Chiyoda, Tokyo, Japan. It consists of 3 chōme. As of March 1, 2007, the district's population is 875. Kanda-Ogawamachi is located on the northern part of Chiyoda. It borders Kanda-Sarugakuchō, Kanda-Surugadai and Kanda-Awajichō to the north, Kanda-Sudachō to the east, Kanda-Nishikichō, Kanda-Tsukasamachi and Kanda-Mitoshirochō to the south, and Kanda-Jinbōchō to the east.