| Jurisdiction: | Diocese |
| Punta Arenas | |
| Latin: | Dioecesis Punta Arenas |
| Local: | Diócesis de Punta Arenas |
| Province: | Puerto Montt |
| Metropolitan: | Puerto Montt |
| Rite: | Latin Rite |
| Established: | 16 November 1883 (years ago) |
| Cathedral: | Cathedral of the Sacred Heart in Punta Arenas |
| Area Km2: | 112,310 |
| Population: | 150,826 |
| Population As Of: | 2004 |
| Catholics: | 120,208 |
| Catholics Percent: | 79.9 |
| Patron: | Mary Help of Christians |
| Bishop: | Óscar Hernán Blanco Martínez, O.M.D. |
| Metro Archbishop: | Luis Fernando Ramos Pérez |
| Emeritus Bishops: | Bernardo Miguel Bastres Florence |
| Website: | www.iglesiademagallanes.cl |
The Diocese of Punta Arenas (in Latin: Dioecesis Punta Arenas) is a suffragan diocese of the Archdiocese of Puerto Montt, in Chile. Its current bishop is Mgr. Óscar Hernán Blanco Martínez, O.M.D.
In 1883 the Holy See established the Apostolic Prefecture of Patagonia Meridional, Tierra del Fuego e Islas Malvinas, which was entrusted to the Salesian congregation. In 1916, the prefecture was upgraded and its name changed to Apostolic Vicariate of Magallanes e Islas Malvinas, and on 17 January 1947, Pope Pius XII erected the diocese proper by means of the Bulla "Ut in amplissimo Patagoniae Chilensis territorio". In 1952, the Apostolic Prefecture of the Falkland Islands was separated from the diocese.
All the bishops of the diocese of Punta Arenas belonged to the Salesian congregation between 1916 and 2022.
The diocese, which comprises the entire Chilean region of Magallanes (Magallanes y Antártida Chilena), covers a territory of 112,302 km². It is estimated than 79% of the inhabitants of the diocese are Catholic.[1] This figure represents about 120,000 Catholics out of a total population of 151,000.
Punta Arenas is the southernmost diocese in the whole Roman Catholic Church and its parish Nuestra Señora del Carmen, in Puerto Williams (Navarino island), is the southernmost Catholic parish in the world.
The mother church of the diocese is the Cathedral of El Sagrado Corazón (Sacred Heart) in the city of Punta Arenas.