Meaning A boy's name of Irish origin, it means "very mighty." Origin of Kegan Celtic , Irish +-100%Zoom level changed to 1 Popular Middle Names Henry, Lamont, Matthew Pronunciation 🔊 Listen Kegan KEE-ghin Similar Names Roarke Thurl Fionntan Conall Conal Garran Gearoid Geralt Abdul Jabar Abdul Aziz Year by Year Popularity of Kegan