The Keio Inokashira Line is a railway line operated by the Japanese private railway operator Keio Corporation in the western suburbs of Tokyo, connecting Shibuya in Tokyo with Kichijōji in Musashino City. It is not physically connected to the Keio Main Line Network, but a transfer is available at Meidaimae Station. This line is 1,067 mm gauge, unlike other Keio lines which are 1,372 mm gauge.

Keio Corporation is a private railway operator in Tokyo, Japan, and the central firm of the Keio Group that is involved in transport, retail, real estate and other industries.