| Jurisdiction: | Diocese |
| Comodoro Rivadavia | |
| Latin: | Dioecesis Rivi Nigri Vallensis Superioris |
| Local: | Diócesis de Comodoro Rivadavia |
| Country: |  Argentina |
| Metropolitan: | Bahía Blanca |
| Province: | Bahía Blanca |
| Area Km2: | 234,000 |
| Population: | 422,000 |
| Population As Of: | 2006 |
| Catholics: | 353,000 |
| Catholics Percent: | 83.6 |
| Parishes: | 33 |
| Denomination: | Catholic Church |
| Rite: | Roman Rite |
| Established: | 11 February 1957 (years ago) |
| Cathedral: | Cathedral of St John Bosco in Comodoro Rivadavia |
| Patron: | St John Bosco |
| Bishop: | Sede vacante |
| Bishop Title: | Bishop |
| Metro Archbishop: | Carlos Alfonso Azpiroz Costa |
| Apostolic Admin: | Roberto Pío Álvarez |
| Emeritus Bishops: | Joaquin Gimeno Lahoz |
The Roman Catholic Diocese of Comodoro is located in the city of Comodoro, in the Patagonian province of Chubut in southern Argentina.
The Roman Catholic Diocese of Comodoro Rivadavia encompasses 234,000 km² (90,382 Square Miles) of central Patagonia covering the Province of Chubut. The Diocese was founded in 1957 from part of the Diocese of Viedma. In 1961, its southern half became the separate Diocese of Río Gallegos. In 2009, part of the diocese became the Territorial Prelature of Esquel. It is a suffragan see to the Archdiocese of Bahía Blanca.
The Cathedral is located in the city of Comodoro Rivadavia. It is dedicated to San Juan Bosco, the only cathedral in the world dedicated to the founder of the Salesian Order. It was inaugurated in 1979, although the crypt had been dedicated in 1949.
In 2024 the Apostolic Administrator, bishop Roberto Álvarez, described the religious landscape of Patagonia as mission territory. "The Patagonian Church is special, and very different from the rest of Argentina. For example, we are a land of evangelisation, a mission country. This region does not have deep Christian roots".[1]
The Roman Catholic Bishop of Comodoro Rivadavia is a prelate bishop of the Roman Catholic Church in Argentina.