Meaning A boy's name of Irish origin, it means "very mighty." Origin of Kegan Celtic , Irish Popular Middle Names Henry, Lamont, Matthew Pronunciation 🔊 Listen Kegan KEE-ghin Similar Names Tincommius Roark Abdul Halim Conaire Gairbraith Garve Geraghty Abdul Azim Conal Raibeart Year by Year Popularity of Kegan