Part of the Banchō area, Sanbanchō (三番町) is an upscale, mostly residential district of Chiyoda, Tokyo, Japan. As of June 2020, the population of this district is 3,666 in 1,707 households. It borders the Tokyo Imperial Palace and the Chidorigafuchi moats to the east, Nibanchō and Yonbanchō to the west, Ichibanchō to the south, and Kudanminami to the north.

Banchō (番町) is an area in Chiyoda, Tokyo, Japan, consisting of the six "-banchō" districts, Ichibanchō (一番町) to Rokubanchō (六番町), as well as parts of Kudanminami and Kudankita, and Fujimi.