W. L. Holman Car Company was a streetcar and cable car manufacturer based in San Francisco, California. It mainly built equipment for rail operation, including San Francisco Municipal Railway's first publicly owned streetcar, and some of the cable cars you see today still operating on San Francisco's California Street line. Holman also constructed heavy interurban coaches and combines (combined passenger and freight-express cars) that ran on inland California electric railroads including Petaluma and Santa Rosa Railroad, Sacramento Northern Railway, and Central California Traction Company, as well as the Sierra Railroad, a Common Carrier line which operated out of Jamestown, California.