The Bay Colony Railroad (reporting mark BCLR) is a shortline railroad operating in Massachusetts. Formerly operating along most of the south coast region (including all lines on Cape Cod), Bay Colony currently operates only along a roughly six-mile stretch of track between New Bedford and Westport, referred to as the Watuppa branch. In addition to moving freight for its customers, Bay Colony also performs AAR-certified repairs on rolling stock and contract track construction projects for other railroads. It has a sister railroad, the Seminole Gulf Railway, which is based out of Fort Myers, Florida.