Meaning A boy's name of Celtic origin, it means "Mythical king of the Underworld." Origin of Arawn Celtic , Irish +-100%Zoom level changed to 1 Popular Middle Names Pronunciation 🔊 Listen Arawn Similar Names Ailill Bhoomindra Lir Nisien Aod Phaneesh Ruairi Ryan Tincommius Ruy Year by Year Popularity of Arawn