Ogawamachi Station (小川町駅, Ogawamachi-eki) is a subway station in Chiyoda, Tokyo, Japan, operated by the Tokyo subway operator Tokyo Metropolitan Bureau of Transportation (Toei). The station opened on March 16, 1980.

Ogawamachi Station is served by the Toei Shinjuku Line, and is located 6.5 km from Shinjuku Station. The station is numbered "S-07". It is connected to Awajichō Station on the Tokyo Metro Marunouchi Line and Shin-Ochanomizu Station on the Tokyo Metro Chiyoda Line via underground passages.

Ogawamachi Station has a single island platform on the forth basement ("B4F") level, serving two tracks. The platform numbers are continuous with the neighboring Awajichō Station and are numbered platforms 3 and 4.

3	S Shinjuku Line	for Jimbocho and Shinjuku KO Keio Line for Sasazuka and Hashimoto
4	S Shinjuku Line	for Bakuro-yokoyama and Motoyawata

• 
  The platforms

The station opened on 16 March 1980.

In fiscal 2011, the station was used by an average of 64,205 passengers daily.

The station is located underneath Tokyo Metropolitan Route 302 (Yasukuni-dōri) between Tokyo Metropolitan Routes 403 (Hongō-dōri) and 405 (Sotobori-dōri). The area is home to many mid-rise office buildings and scattered apartment buildings. Other points of interest include:

• Tokyo Metropolitan Police Department, Kanda Police Station
• Chiyoda City Hall, Kanda Park branch office
• Chiyoda Municipal Chiyoda Elementary School
• Kanda-Awajichō & Kanda-Nishikimachi post offices
• Tokyo Denki University
  • School of Engineering
  • School of Science and Technology for Future Life

• List of railway stations in Japan
• Ogawamachi Station (Saitama)

• Official website (in Japanese)