Saint Munn, also known as Fintán or Munnu, was a priest who lived in Ireland and Scotland during the late 6th and early 7th centuries. He is recognized as a significant monastic leader who established religious communities in both regions, including the abbey at Teach-Mhunn in County Wexford and a site at Kilmun. Known for his deep learning in science and mathematics, he served as an abbot and a guide to many monks, leaving a lasting spiritual legacy through his foundations and his scholarly contributions.