Meaning A boy's name of Scottish origin, it means "Variant of Alexander 'defender of mankind'." Origin of Alistaire Scottish Popular Middle Names Baylen Pronunciation 🔊 Listen Alistaire Similar Names Alandair Alessandre Alesandro Alistir Allistair Alessandri Alissander Allissandre Allistir Alsandare Year by Year Popularity of Alistaire