Alastair

Meaning: Defender of mankind
Origin: Scottish Gaelic (from Greek via Latin) — Variant of Alexander

Boy's name · #2147 in the US (2025) · Trending

Popularity over time

Alastair is moving up the charts. First recorded in 1922, it stood at #2147 in 2025 — its strongest showing yet; about 1,400 boys have been named Alastair along the way.

Across the states

See where Alastair is more common.

Appears in 2020-2025 birth records of 3 states. See the full state-by-state map on this page.

Around the world

See how Alastair ranks in other countries and regions.

#400 in Scotland (2025) · #1,156 in England & Wales (2025) · #1,821 in Canada (2024).

Famous Alastairs

Alastair Reynolds — British science fiction author (born 1966)
Alastair Cook — English cricketer (born 1984)
Alastair Windsor, 2nd Duke of Connaught and Strathearn — Member of the British Royal Family, British Army officer (1914–1943)
Alastair Sim — Scottish actor (1900–1976)
Alastair McCorquodale — British athlete (1925–2009)

In stories & tradition

Alastair — Supernatural (TV series)
Alastair Campbel — TONY! The Blair Musical (musical stage work)

What Alastairs become

Among 363 notable people named Alastair:

Lawyers & judges appear 1.45× more often than among typical names — e.g. Alastair Campbell, Lord Bracadale, British judge.

Similar names: Alexzander · Usher · Alistair · Rexton · Alastor · Lysander

Browse more boy names — popularity, trends and eras for 5,700+ American names, free.

About · Privacy Policy · Terms of Service