Yokohama City Transportation Bureau

Transportation Bureau, City of Yokohama
	Monshō of the Transportation Bureau
	3000 series train on the Subway Blue Line
Native name	横浜市交通局
Romanized name	Yokohama-shi Kōtsū-kyoku
Founded	April 1, 1921
Headquarters	Naka-ku, Yokohama
Area served	Yokohama
Website	www.city.yokohama.lg.jp/kotsu/

The Yokohama City Transportation Bureau, legally the Transportation Bureau, City of Yokohama (横浜市交通局, Yokohama-shi Kōtsū-kyoku) is the local government administrative agency in charge of public transport services in the city of Yokohama, Japan.

Subway operations

The Yokohama Municipal Subway consists of the following lines:

Line 1 (Blue Line), from Kannai to Shōnandai, via Kami-Ōoka, Totsuka
Line 3 (Blue Line), from Kannai to Azamino, via Sakuragichō, Yokohama and Shin-Yokohama.
Line 4 (Green Line), from Hiyoshi to Nakayama

Lines 1 and 3 operate with trains running through from Shonandai to Azamino. At 40.4 km, this is the second-longest subway in Japan after the Toei Ōedo Line in Tokyo.

The missing Line 2 was planned to connect Kanagawa-Shinmachi Station with Byōbugaura Station, along the Keikyū Main Line, but has been cancelled.

Although it runs entirely underground, the Minatomirai Line is not considered part of the subway network, and is not administered by the Transportation Bureau, but by the Yokohama Minatomirai Railway Company.