Alastair

Meaning: Defender of mankind
Origin: Greek — Scottish form 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) · #1,153 in England & Wales (2025) · #2,789 in Canada (2025) · #2,193 in Sweden (2023) · #637 in Ireland (2020) · #3,410 in France (2019) · #357 in N. Ireland (2007) · #357 in New Zealand (1995) · #2,021 in Ecuador (1987).

Famous Alastairs

Alastair Campbell — British journalist and political adviser (born 1957)
Alastair Cook — English cricketer (born 1984)
Alastair Sim — Scottish actor (1900–1976)
Alastair Reynolds — Welsh science fiction author (born 1966)
Alastair Duncan — Scottish actor and real estate broker (born 1958)

In stories & tradition

Alastair — Fictional demon in the TV series Supernatural
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 (born 1949).

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

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

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