Alistair is the Scottish form of Alexander, from Greek meaning 'defender of men.'
Alistair is the polished, literary face of a very old name. It is the usual Scottish form of Alexander, which comes from the Greek Alexandros, built from elements meaning "to defend" and "man," so the broad sense is "defender of men." Through Gaelic usage the name passed through forms such as Alasdair and Alastair before settling into the elegant Anglicized spelling Alistair.
That layered journey gives the name a rare quality: it feels aristocratic in English, but its roots are firmly tied to Scottish speech, clan history, and Highland identity. The name has been carried by soldiers, scholars, and artists, but one of its strongest modern associations comes from the writer and occult thinker Aleister Crowley, whose distinctive spelling helped make the whole family of forms more visible in the English-speaking world. More warmly, Alistair also evokes figures such as broadcaster Alistair Cooke and novelist Alistair MacLean, which has given it an air of intelligence and cultivated confidence.
In literature and popular culture, it often appears on characters meant to seem witty, educated, or faintly old-world. Over time, Alistair has never become as globally common as Alexander, and that has preserved some of its charm. It feels traditional without being overused, formal without sounding stiff. In Britain and other English-speaking countries it has often been perceived as refined and distinctly Scottish, while in North America it reads as a name chosen for history, cadence, and a touch of romantic classicism.