A variant of Alistair, the Scottish Gaelic form of Alexander (Greek), meaning 'defender of men.'
Alistar is a variant of Alistair and Alastair, the Scottish Gaelic rendering of Alexander — itself from the Greek Alexandros, composed of alexein (to defend) and aner (man), yielding the enduring meaning defender of men. The name arrived in Scotland through Norman ecclesiastical channels and the prestige of Alexander the Great's fame, but it was thoroughly domesticated into Highland culture over centuries, becoming one of the quintessentially Scottish masculine names carried by clan chiefs, warriors, and scholars alike.
Notable bearers include Alasdair mac Colla, the ferocious seventeenth-century Royalist general who devastated Argyll during the Wars of the Three Kingdoms, and Alastair Campbell, the British political strategist whose sharp intellect made him a defining figure in New Labour's rise. In popular culture, the Dragon Age character Alistair — noble-born, self-deprecating, and fiercely principled — brought a warm, chivalric quality to the name for a new generation. The Alistar spelling, stripping away the conventional double letters, gives the name a streamlined modernity while preserving its Celtic backbone. It suggests a man who has inherited ancient loyalties but wears them lightly.