Allaistar \a-llais-tar, all(ai)-star\ as a boy's name is a variant of Alastair (Greek), and the meaning of Allaistar is "man's defender".

The baby name Allaistar sounds like Allistir, Allister, Allistair, Allastir, Allaster, Alistar, Alaister and Alaistair. Other similar baby names are Allyster, Allystair, Alister, Alistair, Aleister, Alaisdair, Alastor, Alaster and Alistir.