| Jurisdiction: | Diocese |
| Border: | Catholic |
| Catarman | |
| Latin: | Dioecesis Catarmaniensis |
| Local: | Diyosesis han Catarman Diyosesis ng Catarman |
| Coat: | File:Coat of arms of the Diocese of Catarman.svg |
| Coat Size: | 150px |
| Country: |  Philippines |
| Territory: | Northern Samar |
| Province: | Palo |
| Area Km2: | 3,498 |
| Population: | 666,659 |
| Population As Of: | 2021 |
| Catholics: | 625,384[1] |
| Parishes: | 31 |
| Denomination: | Catholic Church |
| Established: | 5 December 1974 |
| Cathedral: | Cathedral of Our Lady of the Annunciation |
| Priests: | 51 |
| Bishop: | Nolly C. Buco |
| Metro Archbishop: | John F. Du |
| Suffragan: | for one --> |
| Archdeacon: | for one--> |
The Diocese of Catarman (Lat: Dioecesis Catarmaniensis) is a Latin Church ecclesiastical jurisdiction or diocese of the Catholic Church in the Philippines.
Erected in 1974, the diocese is a suffragan in the ecclesiastical province of the metropolitan Archdiocese of Palo. The Diocese of Catarman has experienced no jurisdictional changes since its establishment.
Nolly Buco, who currently serves as the auxiliary bishop of Antipolo, was appointed apostolic administrator by Pope Francis when Bishop Emmanuel Trance retired as bishop of the diocese on 8 December 2023.[2] [3] Trance is from Calinog, Iloilo under the Archdiocese of Jaro.[4] In 18 October 2024, Pope Francis subsequently appointed him as the third bishop of Catarman.[5]
| 1. | Angel Hobayan, JCD | 12 December 1974 - 10 March 2005 | ||
| 2. | Emmanuel Trance | 10 March 2005 - 08 December 2023 | ||
| 3. | Nolly Buco | 08 December 2023 - 17 October 2024 (Apostolic administrator) 15 January 2025 - present (Bishop-elect) |