12th Street/Oakland City Center station (signed as 12th St/Oakland) is an underground Bay Area Rapid Transit (BART) station located under Broadway between 12th Street and 14th Street in Downtown Oakland, adjacent to the Oakland City Center.

An island platform and two main tracks (C1 and CX) for northbound trains (bound for Richmond and Antioch) are on the second level.

A side platform with one track (C2) for southbound trains (bound for Berryessa or San Francisco) is on the third level.

[7] By August 1965, the city wanted to called the station "Oakland Downtown South", while BART preferred "Oakland-12".

[17] A surface elevator near 11th Street, set back from the sidewalk on a parcel being redevelopment, was ultimately built as part of a $1.47 million modification to the station.

The United States Department of Transportation awarded $1.17 million for the project in April 1974, and a construction contract was issued that December.

[25][5] The new track was originally used for peak hour service (southbound towards San Francisco in the morning, and northbound in the evening).

[35] Construction of the Oakland–San Leandro East Bay Bus Rapid Transit line (later branded Tempo) began in August 2016.

[36] Tempo route 1T service began on August 9, 2020, with surface stations at 14th Street and City Center.