The Franciscan School of Theology (FST) is a Roman Catholic graduate theological school at the University of San Diego, a private Roman Catholic research university in San Diego, California.

FST is owned and operated by the Province of Saint Barbara of the Order of Friars Minor and also has academic and other affiliations with USD.

"[4] Franciscan School of Theology traces its roots back to 1854 when an apostolic college was chartered at Mission Santa Barbara.

In 2012, FST announced that it was affiliating with USD and relocating to Mission San Luis Rey de Francia in Oceanside, California.

[7][8][9] FST trains lay men and women of the Roman Catholic Church, Franciscan seminarians, and seminarians for the Roman Catholic Diocese of San Diego.