The Roman Catholic Diocese of Naval (Lat: Dioecesis Navaliensis) is a diocese of the Roman Rite of the Latin Church of the Catholic Church in the Philippines. Its cathedral is in Naval, Biliran in the Eastern Visayas. Its territory includes whole island of Biliran and the northwestern tip of Leyte Province. Erected in 1988, the diocese was created from territory of the Roman Catholic Archdiocese of Palo, to which the diocese remains a suffragan. The first appointed bishop was Filomeno The was established in 1990 AD. It is the first catholic school in the diocese.