Tokyo 10th district is a constituency of the House of Representatives in the Diet of Japan (national legislature).

[1] The district is located in the central area of the former city of Tokyo.

Before the electoral reform of 1994, the area had been part of Tokyo 5th district where three Representatives had been elected by single non-transferable vote.

Until her successful gubernatorial bid in 2016, Liberal Democrat Yuriko Koike had represented the district.

Koike, formerly a representative for Hyōgo 6th district, had taken over Tokyo 10th district in 2005 as one of Jun’ichirō Koizumi's "female assassins" to take out postal privatization rebel Kōki Kobayashi.