The Roman Catholic Diocese of Masbate (Latin: Dioecesis Masbatensis) is a diocese of the Latin Rite of the Catholic Church in the Philippines. The seat of the bishop is the Cathedral Parish of Saint Anthony of Padua along Quezon Street, Masbate City. The diocese has experienced no jurisdictional changes and is suffragan to the Archdiocese of Cáceres. Its patron is Saint Anthony of Padua.