The Diocese of Chillán is a Roman Catholic diocese located in the city of Chillán, Chile. Established in 1991, it is part of the Ecclesiastical Province of Concepción. The diocese serves a diverse population and is responsible for the spiritual and administrative needs of its parishes. The diocese encompasses several communities and is led by a bishop, who oversees the clergy and various church activities. It aims to promote the teachings of the Catholic Church and engage with local social issues, fostering a sense of community among its members.