Alastair is a male name.
Alastair is an Anglizised form of the name Alasdair, a Scottish-Gaelic variant of Alexander.
Alastair means “defending men” (from Greek “alexein” = to defend/help + “aner” = man).
Make sure you don't miss any baby name with our free app CharliesNames. Download it now and find the most amazing names! :)