The Crown Supercoach is a bus that was constructed and marketed by Crown Coach Corporation from 1948 to 1991. While most examples were sold as yellow school buses, the Supercoach formed the basis for motorcoaches and other specialty vehicles using the same body and chassis. While technically available outside of the West Coast, nearly all Crown school buses were sold in Washington state, Oregon and California.

The Crown Coach Corporation is a defunct American bus manufacturer. Founded in 1904, the company was best known for its Supercoach range of yellow school buses and motorcoaches; the former vehicles were marketed throughout the West Coast of the United States. Competing alongside Gillig Corporation and similar its Gillig Transit Coach, the two companies supplied California with school buses nearly exclusively into the 1980s.