The boy's name Aleister \a-leis-ter, ale(i)-ster\ is a variant of Alastair (Greek) and Alistair (Greek), and the meaning of Aleister is "man's defender". The baby name Aleister sounds like Allister, Alister, Alester and Alaister.
Aleister is baby boy name mainly popular in Christian religion and its main origin is . Aleister name meanings is Defend, to help, helper of mankind. Other similar sounding names can be Alistair.