Tsukasamachi (司町), officially Kanda-Tsukasamachi (神田司町), is a district of Chiyoda, Tokyo, Japan. Today, it consists only of Kanda-Tsukasamachi 2-chōme. As of April 1, 2007, its population is 420. Its postal code is 101-0048.
Kanda-Tsukasamachi is located on the northern part of Chiyoda Ward. It borders Kanda-Ogawamachi and Kanda-Sudachō to the north, Kanda-Tachō to the east, (across Kanda-Keisatsu-Dōri Ave.) Uchi-Kanda to the south, and Kanda-Mitoshirochō to the west.