Cúan was an Irish abbot who lived from approximately 650 to 752. During his long life, which spanned nearly a century, he established numerous monasteries and churches throughout Ireland. Although historical details regarding his life are sparse, the *Annals of Inisfallen* identify him as the abbot Liath Mo-Chaemóc. He remains a significant figure in Irish ecclesiastical history due to his role as a monastic founder.