The Roman Catholic Diocese of Pavia is a diocese located in the northern Italian region of Lombardy. It was established in the 4th century and is part of the ecclesiastical province of Milan. The diocese serves the city of Pavia and surrounding areas, providing spiritual guidance and support to its Catholic community. The diocese is home to several historic churches and religious institutions, including the notable Cathedral of Pavia. It plays a significant role in the local community, overseeing various parishes and promoting social and charitable activities in line with the teachings of the Roman Catholic Church.