| Jurisdiction: | Diocese |
| Border: | Catholic |
| Borongan | |
| Latin: | Dioecesis Boronganensis |
| Local: | Diyosesis han Borongan Diyosesis ng Borongan |
| Coat: | File:Coat of arms of the Diocese of Borongan.svg |
| Coat Size: | 150px |
| Country: |  Philippines |
| Territory: | Eastern Samar |
| Province: | Palo |
| Area Km2: | 4,339 |
| Population: | 496,000 |
| Population As Of: | 2021 |
| Catholics: | 491,000[1] |
| Parishes: | 33 |
| Denomination: | Catholic Church |
| Established: | 22 October 1960 |
| Cathedral: | Cathedral of the Nativity of the Blessed Virgin Mary |
| Priests: | 70 |
| Bishop: | Crispin Barrete Varquez |
| Metro Archbishop: | John F. Du |
| Suffragan: | for one --> |
| Vicar General: | Lope C. Robredillo |
| Episcopal Vicar: | Dan Gañas Leroy Geli Joberto Picardal |
| Archdeacon: | for one--> |
The Diocese of Borongan (Lat: Dioecesis Boronganensis) is a Latin Church ecclesiastical jurisdiction or diocese of the Catholic Church in the Philippines. Created on October 22, 1960 by Pope John XXIII from territory of the Diocese of Calbayog, the diocese is a suffragan in the ecclesiastical province of the metropolitan Archdiocese of Palo.
Bishop Vicente Reyes was the first diocesan bishop. On June 19, 1965, the island of Samar was politically divided and the province of Eastern Samar was born. Thus the island of Samar has three dioceses: Calbayog for Western Samar, Catarman for Northern Samar and Borongan for Eastern Samar.
Eastern Samar has a population of 374,255, 97 percent are Catholics. It is subdivided into 1 city and 22 municipalities. It has a land area of 4,470.75 square kilometers. It is bounded on the north by Northern Samar, on the east by the Philippine Sea, on the west by Western Samar and on the south by Leyte Gulf.
The Diocese of Borongan is divided into three regions, each has two vicariates. The episcopal see is Borongan. The diocese has experienced no jurisdictional changes since being erected.
Crispin Barrete Varquez was appointed its bishop in 2007.
| No. | Picture | Name | From | Until | Coat of Arms | |
|---|---|---|---|---|---|---|
| 1st | Vicente P. Reyes | 19 January 1961 (Appointed) | 8 August 1967 (Deceased, Emeritus Bishop of Cabanatuan) | |||
| 2nd | Godofredo Pisig Pedernal | 26 February 1968 (Appointed) | 18 September 1976 (Resigned) | |||
| 3rd | Sincero Barcenilla Lucero | 8 March 1977 (Appointed) | 10 December 1979 (emeritus Bishop of Calbayog) | |||
| 4th | Nestor Celestial Cariño | 12 August 1980 (Appointed) | 31 January 1986 (Resigned) | |||
| 5th | Leonardo Yuzon Medroso | 18 December 1980 (Appointed) | 31 January 2006 (Retired, Bishop Emeritus of Tagbilaran) | |||
| 6th | 4 August 2007 (Appointed) | Present |
In the 8th of December 1995, the Parish Church of the Immaculate Conception, Guiuan formally launched a beatification movement for Donato Guimbaolibot, coinciding with the town fiesta and the celebration of the 400th anniversary of the town's Christian evangelization to the Vatican Council.