St. Joseph's College was a seminary of the Archdiocese of San Francisco at Mountain View, California opened in September 1924. It was also referred to as St. Joseph's Seminary. It was run by the Sulpician Fathers.
The seminary buildings were severely damaged by the Loma Prieta earthquake on 17 October 1989. The seminary was permanently closed on June 30, 1991. The site is now part of Rancho San Antonio County Park.