The Cobourg Car Works, also known as the Crossen Car Works, was an early railway car and streetcar builder based in Cobourg, Ontario. The company was split off from the Ontario Foundry in 1873 by James Crossen Jr., the foundry's owner. When James died in 1890, control of the company passed to his children, who renamed it as the Crossen Car Manufacturing Company. Supplying almost all of the major Canadian railways, as well as many local regional lines, the Crossen works because the largest car company in Canada. The move to all-steel constructed and CPR's decision to open their own works led to a rapid downturn in business, and the company closed in 1913.