Ichibanchō (一番町?) is an upscale residential district of Chiyoda, Tokyo, Japan. The district is located just east of Tokyo Imperial Palace, and is home to the British Embassy and Paraguayan Embassy. Joshigakuin Junior and Senior High School (女子学院中学校・高等学校?) is a prestigious private secondary school and the only educational institution based in Ichibanchō.
The district borders Chiyoda (Tokyo Imperial Palace) on the west, Sanbanchō and Yonbanchō on the north, Nibanchō on the east, and Kōjimachi on the south.