Alistair

Alasdair (also Alistair and variants) is a male given name. Alasdair is the Scottish Gaelic spelling of the name, in origin the Gaelic form of the name Alexander (Greek Αλέξανδρος Alexandros). Also common is the anglicised spelling Alistair.

Originally a Scottish given name, it became widespread throughout the Anglosphere during the 19th and 20th centuries.

The Scottish Clan MacAlister is on record as a branch of Clan Donald from the mid 16th century. Its eponymous founder is traditionally held to be Alasdair Mòr (fl. 1250s), a younger son of Domhnall mac Raghnaill.