Meaning and name origin
Alistaire \a-listai-re, al(is)-taire\ as a boy's name is of Greek origin, and the meaning of Alistaire is "man's defender". Alistaire is a variant of Alistair (Greek): Scottish spelling of Alasdair, the Gaelic form of Alexander, which has long been popular in Scotland, having been borne by three medieval kings of the country.
Alistaire is not a popular first name for males and an equally uncommon surname or last name for all people (2000 U.S. Census).
Displayed below is a comparison of the popularity of the boy name Alistaire and its variant forms. The only popular variation form ranked in the Top 1000/100 is Alistair. (2014 statistics).