Meaning A boy's name of Gaelic origin, it means "Variant of Cullen: Handsome; Good-looking Lad." Origin of Collan Gaelic , Irish Popular Middle Names Reilly Pronunciation 🔊 Listen Collan Similar Names Cullen Cully Caomhan Keneth Ailen MacAilean Eanrin Mac Ailean MacAllen Allen Year by Year Popularity of Collan