The Port of Los Angeles Waterfront Red Car Line was a 1.5-mile (2.4 km) heritage streetcar line for public transit along the waterfront in San Pedro, at the Port of Los Angeles in Los Angeles, California. The line operated between July 2003 and September 2015, when service was discontinued due to major construction projects that resulted in the demolition of a portion of the route.

The Port of Los Angeles is a seaport managed by the Los Angeles Harbor Department, a unit of the City of Los Angeles. It occupies 7,500 acres (3,000 ha) of land and water with 43 miles (69 km) of waterfront and adjoins the separate Port of Long Beach. Promoted as "America's Port", the port is located in San Pedro Bay in the San Pedro and Wilmington neighborhoods of Los Angeles, approximately 20 miles (32 km) south of downtown.