Meaning A boy's name of Gaelic origin, it means "Son of Alasdair." Origin of MacAladair Gaelic , Irish Popular Middle Names Pronunciation 🔊 Listen MacAladair Similar Names Mac Ailean MacAdhamh Muireach Mac a’bhaird Mac a’bhiadhtaiche Mac Adhaimh Mac Alasdair Mac an Aba Mac an Bharain Mac an Bhreatannai Year by Year Popularity of MacAladair