The Cathedral of the Annunciation is a Catholic cathedral in Stockton, California, United States. It is the seat of the Diocese of Stockton. Archbishop John J. Mitty of San Francisco approved the building of a new parish in the north side of Stockton in 1941. As the population of the city was growing to the north, the decision was made to build a "new" St. Mary's, and then eventually tear down the "old" St. Mary's downtown that had been built in 1893 and was in bad need of repair.