Bilihildis was an 8th-century Frankish noblewoman and Benedictine abbess. Born in the 7th century in Veitshöchheim, she is primarily remembered for establishing the Altmünster monastery near Mainz. After being married to a pagan duke, she eventually sought a religious life and used her personal wealth to found her monastic community. She served as the first abbess of Altmünster before her death in 734. She is recognized as a saint and is commemorated in the Catholic tradition.