Aiulf I (also Aione) was the duke of Benevento from 641 to his death in 646 as the son and successor of Arechis I. However, he was mentally unstable and his adoptive brothers Radoald and Grimoald were regents for him.
Aiulfo I (tamén Aión) foi duque de Benevento desde o 641 ata a súa morte en 646 como fillo e sucesor de Arechis I. Con todo, tiña problemas mentais e os seus irmáns adoptivos Radoaldo e Grimoaldo foron rexentes seus.