Dillon is an Irish surname and given name, derived from the Irish Gaelic Ó Dhuibhlin sept name. It means 'son of David' in translation. The name was brought to Ireland by Norsemen during the Viking invasions. Historically, it was borne as a surname but has been increasingly used as a given name since the mid-20th century.
"Dillon experienced a steady increase in popularity from the late 80s to its peak in 2017-2023, with a significant spike in recent years."