The Diocese of Montpellier is a Roman Catholic diocese located in the south of France. It was established in the 3rd century and is part of the ecclesiastical province of Béziers. The diocese covers the area around the city of Montpellier and includes several surrounding towns and villages. The diocese is known for its rich history and architectural heritage, including the Saint-Pierre Cathedral, which showcases Gothic architecture. The bishop of Montpellier oversees the spiritual and administrative needs of the diocese, serving the local Catholic community and promoting religious activities throughout the region.