What does Aleister mean?
Aleister \a-leis-ter, ale(i)-ster\ as a boys' name. Aleister's name origins are Scottish and Greek, and the name Aleister means "man's defender". Aleister is a derivative of Alastair (Scottish, Greek): Scottish variant of Alistair. Scarcely used as a name for boys.
Aleister has 19 variants: Alaistair, Alaister, Alasteir, Alaster, Alastor, Alester, Alistaire, Alistar, Alister, Allaistar, Allaster, Allastir, Allistair, Allister, Allistir, Allystair, Allyster, Alystair and Alyster.
Aleister is an uncommon first name for men. Aleister is a unique surname too for all people. (2000 U.S. Census)
Alistair and Al are the prominent varying forms of Aleister (#unlisted) listed in the Top 1000. Adoption of these boy names was at its apex during 1880-1889 and is now significantly lower, with the form Al becoming less in vogue. Below is a graphed comparison of the usage of Aleister and related names. (2014 Birth Statistics)
Aleister is pronounced similarly to Alistir. Like Aleister, this name is not frequently used.