The Diocese of Digne (Latin: Dioecesis Diniensis; French: Diocèse de Digne) is a Latin Church ecclesiastical territory or diocese of the Catholic Church in France. Erected in the 4th century as the Diocese of Digne, the diocese has been known as the Diocese of Digne–Riez–Sisteron since 1922. The diocese comprises the entire department of Alpes-de-Haute-Provence, in the Region of Provence-Alpes-Côte d'Azur. The diocese was a suffragan diocese of the Archdiocese of Aix-en-Provence and Arles until 2002 and is now a suffragan diocese in the ecclesiastical province of the metropolitan Archdiocese of Marseille. The Bishop of Digne's cathedra is found in Digne Cathedral at the episcopal see of Digne-les-Bains.