Dunstan is an uncommon male given name of Old English origin, derived from 'Dunningtun', meaning 'settlement on a hill'. It was popular during the Middle Ages but has since fallen out of fashion. The name Dunstan is associated with Saint Dunstan, a 10th-century Benedictine abbot and Archbishop of Canterbury, who was renowned for his learning and sanctity.
The name Dunstan was quite popular in 1976 with a total of five babies born that year.