Kōjimachi

is a neighborhood in Chiyoda, Tokyo.

Prior to the arrival of Tokugawa Ieyasu, it was known as nihongo|Kōjimura|糀村. The area developed as townspeople settled along the Kōshū Kaidō. In 1878 Kōjimachi became a ward in the city of Tokyo. It was the forerunner of Chiyoda which is now a special ward.

The Kōjimachi ward was larger than present day Kōjimachi. The area centered upon Kōjimachi including the districts of the Banchō area, Kudanminami, Kioichō, Hirakawachō and Hayabusachō is sometimes referred as the Kojimachi area (麹町地区).

In the area

*Sony Music Entertainment
*Embassy of Ireland
*Nippon Television had its headquarters here, and maintains offices in the former headquarters building
*Tokyo FM
*Tokyo Metropolitan Television
*Hanzōmon Station, Station Z-05 on the Tokyo Metro Hanzomon Line
*Kōjimachi Station, Station Y-15 on the Tokyo Metro Yurakucho Line