The Diocese of Bayonne is a Roman Catholic diocese located in the southwestern region of France. Established in 1801, it serves the spiritual needs of the Catholic community in the area, which includes the city of Bayonne and surrounding regions. The diocese is part of the ecclesiastical province of Bordeaux. The diocese is governed by a bishop, who oversees various parishes and religious activities. It plays a significant role in promoting the Catholic faith, education, and social services within its jurisdiction. The diocese also engages in ecumenical dialogue and collaborates with other Christian denominations in the region.