Diocese of Bayombong Dioecesis Bayombongensis Diyosesis ng Bayombong Diocesis ti Bayombong Diócesis de Bayombong
Coat of arms
Location
Country	Philippines
Territory	Nueva Vizcaya Quirino
Ecclesiastical province	Tuguegarao
Metropolitan	Tuguegarao
Statistics
Area	6,961 km2 (2,688 sq mi)
Population - Total - Catholics	(as of 2012) 597,000 421,000 (70.5%)
Parishes	20
Information
Denomination	Roman Catholic
Sui iuris church	Latin Church
Rite	Roman Rite
Cathedral	Cathedral-Parish of St. Dominic of Guzman
Patron saint	St. Dominic of Guzman (Patron) St. Vincent Ferrer (Secondary Patron)
Current leadership
Pope	Francis
Bishop	Most Rev. Jose Elmer I. Mangalinao, STL, D.D.
Metropolitan Archbishop	Most Rev. Ricardo L. Baccay, D.D.
Bishops emeritus	Most Rev. Ramon B. Villena, D.D. (1986-2016)

The Roman Catholic Diocese of Bayombong (Lat: Dioecesis Bayombongensis) is a Roman Rite diocese of the Latin Church of the Catholic Church in the Philippines. Its seat is the Bayombong Cathedral.

History

Erected in November 7, 1966, as the territorial prelature of Bayombong, the prelature was elevated to a full diocese in November 1982.^[1] The diocese is a suffragan of the Archdiocese of Tuguegarao.

After the resignation of Bishop Villena in 2016, Pope Francis appointed Sofronio Aguirre Bancud, SSS, DD, Bishop of Cabanatuan as Apostolic Administrator while he selected a new bishop. On May 24, 2018, the Pope appointed Jose Elmer I. Mangalinao, DD, Auxiliary Bishop of Lingayen-Dagupan as the Third Bishop of the Diocese of Bayombong.

Ordinaries

Bishop		Period in Office	Coat of Arms	Ref.
1.	Albert Van Overbeke, CICM, D.D.	November 18, 1966 – September 15, 1986 (resigned)		[2]
2.	Ramon B. Villena, D.D.	September 15, 1986 (succeeded) – May 28, 2016 (retired)		[3]
3.	Jose Elmer L. Mangalino, SThL, D.D.	May 24, 2018 – present		[4]