The Diocese of Brixen, also known as the Brixen Diocese, is a Roman Catholic diocese located in northern Italy. It was established in the 4th century and is one of the oldest dioceses in the region. The diocese covers parts of the provinces of South Tyrol and Trentino, with its seat in the city of Brixen (Bressanone). The diocese is part of the ecclesiastical province of Trento and is known for its rich history and cultural heritage. The Brixen Cathedral, dedicated to Saint Peter, serves as the cathedral church and is a significant landmark in the area. The diocese plays an important role in the spiritual life of its community.