The Bus Riders Union (BRU) (also called Sindicato de Pasajeros (SDP) and 버스 승객 조합 (버승조)) is a United States civil rights social movement organization established in Los Angeles, California in 1994.

The BRU attracted international attention when it successfully sued LACMTA under Title VI of the Civil Rights Act in 1994 and its example has inspired similar efforts to organize mass transit passengers.

"[9][8] In 1996, it filed a civil rights lawsuit in association with the Southern Christian Leadership Conference and Korean Immigrant Workers Advocates against the Los Angeles County Metropolitan Transportation Authority, alleging that the LACMTA was using federal funds for public transit in a discriminatory manner.

[9] A feature-length documentary titled Bus Riders Union (2000) directed by Academy Award-winning cinematographer Haskell Wexler, captures the early years of organizing through to the signing of the consent decree.

[10] Represented by Constance Rice and others from the NAACP Legal Defense and Educational Fund, LCSC, BRU, Southern Christian Leadership Conference and Korean Immigrant Workers Advocates were able first to obtain an injunction preventing LACMTA from eliminating the monthly pass in 1994.

[11][12] Martin Wachs and Richard Berk of UCLA, and James Moore II of USC were among the professors of transportation, planning and statistics who provided expert reports and other assistance to the plaintiffs.

[24][25] An additional line of criticism draws from modal debates in the field of urban transit planning, asserting that rail should hold a higher priority than the bus, or that the BRU’s overemphasis on one mode is counterproductive.