The Roman Catholic Diocese of San Carlos de Ancud (in Latin: Dioecesis Sancti Caroli Anduciae) is a suffragan diocese of the archdiocese of Puerto Montt, in Chile. Its current bishop is Mgr. Juan María Florindo Agurto Muñoz. The retired (emeritus) bishop is Mgr. Juan Luis Ysern de Arce.
The diocese is one of the oldest catholic dioceses in Chile. It was established by Pope Gregory XVI, by means of the Bulla "Ubi Primum" on 1 July 1840. The current Chilean dioceses of Villarrica, Valdivia, Osorno, Puerto Montt, Punta Arenas and the Apostolic Vicariate of Aysén have all been carved out of the original territory of the diocese of San Carlos de Ancud, at different times.
The diocese, which comprises the provinces of Chiloé and Palena, in the Los Lagos region of Chile, covers a territory of 24,283 km² and has 26 parishes. Its estimated catholic population is about 117,000 out of a total population of 152,000. The diocesan cathedral ("El Sagrario" parish), is located in the city of Ancud.
Justo Donoso Vivanco † (3 July 1848 - 19 March 1853, appointed bishop of La Serena)Vicente Gabriel Tocornal Velasco † (10 March 1853 - 11 November 1857, died)Juan Francisco de Paula Solar Mery † (20 March 1857 - 21 April 1882, died)Agustín Lucero Lazcano † (11 December 1886 - 3 December 1897, died)Ramón Angel Jara Ruz † (28 April 1898 - 31 August 1909 appointed bishop of La Serena)Pedro Armengol Valenzuela Poblete † (30 June 1910 - 16 December 1916, resigned)Luis Antonio Castro Alvarez † (21 February 1918 - 23 October 1924, resigned)Abraham Aguilera Bravo † (24 October 1924 - 30 April 1933, died)Ramón Munita Eyzaguirre † (22 January 1934 - 29 April 1939 appointed bishop of Puerto Montt)Hernán Frías Hurtado † (28 March 1940 - 13 January 1945 appointed bishop of Antofagasta)Cándido Rada Senosiáin † (9 June 1945 - 22 December 1949, resigned)Osvaldo Salinas Fuenzalida † (3 August 1950 - 15 June 1958 appointed bishop of Linares)Alejandro Durán Moreira † (17 April 1959 - 31 March 1966 appointed bishop of Los Angeles)Sergio Otoniel Contreras Navia (21 November 1966 - 25 January 1974 appointed auxiliary bishop of Concepción)Juan Luis Ysern de Arce (13 May 1974 - 15 September 2005 retired)Juan Maria Florindo Agurto Muñoz (15 September 2005 succeeded - )El Sagrario, (Cathedral) AncudSan Antonio, ChacaoSan Ramón, NalNuestra Señora del Tránsito, LliucoPatrocinio San José, QuemchiSanta María de Loreto, AchaoApóstol Santiago, CastroSagrado Corazón, CastroSan Judas, Curaco de VélezSantos Reyes, ChaulinecNuestra Señora del Rosario, ChelínNuestra Señora de Lourdes, DalcahueSan Francisco Javier, MechuqueCorazón de María, QuilquicoNatividad de María, RilánPatrocinio San José, TenaúnNuestra Señora de los Dolores, VolgueNuestra Señora del Perpetuo Socorro, QuenacSan Carlos, ChonchiSan Pedro Nolasco, PuqueldónNuestra Señora del Tránsito, QueilénSan Antonio, QuellónSan Juan Bautista, RaucoNuestra Señora de los Dolores, Chaitén