Ogawamachi (小川町?), or formally Kanda-Ogawamachi (神田小川町?), is a district in Chiyoda, Tokyo, Japan. It consists of 3 chōme. As of March 1, 2007, the district's population is 875. Its postal code is 101-0052.
Kanda-Ogawamachi is located on the northern part of Chiyoda. It borders 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.
A commercial neighborhood, Kanda-Ogawamachi is home to a number of buildings and stores. Notably, many sporting-goods stores can be found on Yasukuni-Dori Ave. Since the district is located adjancent to Kanda-Jinbōchō, home to a massive book town, several publishers and bookstores can be found as well.