Alberico I was an Italian nobleman who lived during the late 10th century. He is best known for his role as the Duke of Spoleto and as a significant figure in the political landscape of central Italy. His reign was marked by efforts to consolidate power and influence in the region, particularly in the context of the declining authority of the Holy Roman Empire. Alberico I was also associated with the Papal States, where he played a crucial role in the complex relationships between local nobility and the papacy. His actions contributed to the ongoing struggles for control and governance in Italy during a time of fragmentation and conflict among various factions.