Coast Mountain Bus Company (CMBC) is the contract operator for bus transit services in Metro Vancouver and is a wholly owned subsidiary of the South Coast British Columbia Transportation Authority, known locally as TransLink, the entity responsible for public transit in the region.

The Coast Mountain Bus Company was created on April 1, 1999, concurrent with the implementation of TransLink.

In 2001, over 3,400 workers rallied in a strike and disrupted transit service for 123 days, from April 1, 2001, to August 1, 2001.

[12] In January 2024, CUPE 4500, a union representing transit supervisors and other bus system staff, went on strike.

(32) (25)[33] (15)[34] (50) (25) (21) (26) (63) (47) 18510–18527 Letter prefixes are prepended to the bus numbers on most conventional Coast Mountain buses, except trolleys.

Exceptions to this are trolley buses, which follow a numbering scheme dating back to the British Columbia Electric Railway era, and older Community Shuttles, which followed either a three-digit system or the four-digit system of West Vancouver.

The first prototype 40-foot (12 m) New Flyer/Vossloh Kiepe low-floor trolley bus arrived at the Oakridge Transit Centre on July 2, 2005.

[57] It was announced that the original bike racks on the 2006 New Flyer buses can only be used in daylight, as they blocked the headlights at night.