The Roman Catholic Diocese of Talca, (in Latin: Dioecesis Talcensis), is a suffragan diocese of the archdiocese of Santiago de Chile. Its current bishop, Galo Fernández Villaseca, was appointed on 20 March 2021.^[2] The diocesan cathedral is in the city of Talca.

The dioceses of Talca, of Rancagua and of San Felipe were erected by Pope Pius XI on 18 October 1925 by means of the Bulla "Notabiliter Aucto".^{[citation needed]}

The diocese lies in the Maule Region of Chile and covers a territory of 17,000 km². It is comprised by the province of Curicó and by eight municipalities (comunas) of the province of Talca (the parishes of the municipalities of Empedrado and Constitución are jurisdictionally attached to the neighboring diocese of Linares, from an ecclesiastical point of view). The diocese is divided into 45 parishes (as of April 2015), grouped in 5 pastoral zones.^[1]

• Miguel León Prado (apostolic administrator) † (12 June 1913 – 18 October 1925 appointed, auxiliary bishop of Santiago de Chile)
• Carlos Silva Cotapos † (14 December 1925 – 21 January 1939 resigned)
• Manuel Larraín Errázuriz † (21 January 1939 succeeded – 22 June 1966 died)
• Carlos González Cruchaga (4 January 1967 – 12 December 1996 retired)
• Horacio del Carmen Valenzuela Abarca (12 December 1996 appointed – 28 June 2018 retired)^[3]
• Galo Fernández Villaseca (20 March 2021 appointed – present)

• Website of the diocese (in Spanish)
• www.catholic-hierarchy.org: Diocese of Talca