The Catholic Diocese of St. Gallen is a Roman Catholic diocese located in eastern Switzerland. Established in the 8th century, it serves the spiritual needs of the Catholic community in the region. The diocese is part of the larger ecclesiastical province of Archdiocese of Zurich and is known for its rich history and cultural heritage. The diocese is led by a bishop, currently Bishop Markus Büchel, who oversees various parishes and institutions within its boundaries. The diocese is also involved in social and educational initiatives, promoting the values of the Catholic faith and supporting local communities through various programs and services.