The Toei Mita Line is a subway line of the Tokyo Metropolitan Bureau of Transportation (Toei) network in Tokyo, Japan. The line runs between Nishi-Takashimadaira in Itabashi and Meguro in Shinagawa. Trains continue with direct service into the Meguro Line of Tokyu Corporation for Hiyoshi. The portion between Shirokane-Takanawa and Meguro is shared with the Tokyo Metro Namboku Line.

Itabashi is a special ward in the Tokyo Metropolis in Japan. In English, it is called Itabashi City. Itabashi has sister-city relations with Burlington, Ontario, in Canada; Shijingshan District of Beijing in the People's Republic of China; and Bologna in Italy.