The meaning of the name Alastair is Defender Of The People. The origin of the name Alastair is Scottish. This is the culture in which the name originated, or in the case of a word, the language.
Scottish form of Alexander, originally spelled Alasdair
Alastair is on 1,505 BN name lists Alastair is currently not ranked on the BN charts Alastair is currently not ranked in U.S. births
Alastair 
