Meaning A boy's name of Gaelic origin, it means "Son of the Handsome Man." Origin of MacAllen Gaelic , Irish Popular Middle Names Pronunciation 🔊 Listen MacAllen Similar Names Mac Adhaimh Mac Asgaill Mac Bhriain Mac Ghille Bhuidhe Gaylen Coll Ealuvig Fyrsil Caomh Muireach Year by Year Popularity of MacAllen