Berno of Cluny was a 9th-century Benedictine monk who served as the inaugural abbot of the monastery at Cluny from its 909 foundation until his death in 927. Born around 850 in La Baume, he was a key figure in the monastic reform movement, seeking to restore strict adherence to the Rule of Saint Benedict. After serving at various locations including Autun and Baume-les-Messieurs, he oversaw several foundations, including Gigny and Cluny, establishing a tradition of reform that would eventually spread throughout Europe.