| Jurisdiction: | Diocese |
| Mangalore | |
| Latin: | Dioecesis Mangalorensis |
| Local: | ಮಂಗಳೂರು ಧರ್ಮಕ್ಷೇತ್ರ |
| Image Alt: | Our Lady of Rosary of Mangalore |
| Country: | India |
| Territory: | Karnataka |
| Province: | Bangalore |
| Area Km2: | 5,924 |
| Population: | 2,978,560 |
| Population As Of: | 2012 |
| Catholics: | 267,343 |
| Catholics Percent: | 9 |
| Parishes: | 124 |
| Denomination: | Catholic Church |
| Sui Iuris Church: | Latin Church |
| Established: | 1 September 1886 |
| Cathedral: | Our Lady of Rosary of Mangalore |
| Patron: | Saint Joseph |
| Bishop: | Peter Paul Saldanha |
| Metro Archbishop: | Peter Machado |
| Map: | Diocese of Mangalore map 1.png |
| Map Alt: | Diocese of Mangalore map |
| Website: | dioceseofmangalore.org/ |
| Dean: | Fr. John Baptist Crasta |
The Diocese of Mangalore (Latin: Diocesis Mangalorensis) is a Latin Church ecclesiastical jurisdiction or diocese of the Catholic Church located in the city of Mangalore, India. The diocese is a suffragan in the ecclesiastical province of the metropolitan Archdiocese of Bangalore. At present, it comprises the whole civil districts of Dakshina Kannada and Udupi in Karnataka state. The area of the Diocese was collectively referred to as South Canara during the Company rule in India, in the subsequent British India after Direct rule from London commenced & in the early post-independence Bombay state, prior to the States Reorganisation Act (1956). It was established as a separate Apostolic Vicariate from the Apostolic Vicariate of Verapoly in 1853, and was promoted to a diocese on 1 September 1886.
On Monday, July 16, 2012, it lost territory when Pope Benedict XVI erected the new Roman Catholic Diocese of Udupi (made up of the three civil townships of Udipi, Karkala& Coondapoor), which will also become part of the Province of Bangalore.[1]
Below are the Deaneries of Mangalore Diocese[3]