The Roman Catholic Diocese of Auxerre is a diocese located in the region of Burgundy, France. It was established in the 3rd century and is one of the oldest dioceses in the country. The diocese is part of the ecclesiastical province of Dijon and serves the spiritual needs of its Catholic community through various parishes and institutions. The diocese is named after its capital city, Auxerre, which has historical significance and is known for its rich architectural heritage, including the Auxerre Cathedral. The diocese plays a vital role in promoting the teachings of the Catholic Church and engaging in community service and outreach programs.