St. Augustine High School is a private Catholic high school for young men under the direction of the Order of Saint Augustine located in the North Park district of San Diego, California and founded in 1922. It is located in the Diocese of San Diego, and is a member of the Augustinian Secondary Education Association.

The Diocese of San Diego is a Latin Church ecclesiastical territory or diocese of the Catholic Church in Southern California, United States. Its ecclesiastical territory includes all of San Diego and Imperial Counties.