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Meaning of the Name Alastair

Updated November 13, 2025 by Jennifer M.

Alastair

Gender: Male
Origin: Scottish
Meaning: Defender Of The People

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What is the meaning of the name Alastair?

The name Alastair is primarily a male name of Scottish origin that means Defender Of The People.

Scottish form of Alexander, originally spelled Alasdair

Different Spellings of the name Alastair:

Allister, Alasdair, Alastor

People who like the name Alastair also like:

Liam, Oliver, Aiden, Alexander, Alistair, Archer, Atticus, Aurora, Charlotte, Genevieve, Amelia, Alice, Violet, Adelaide

Names like Alastair:

Stats for the Name Alastair

Alastair is currently #23 on the Baby Names Popularity Charts

Alastair is currently not ranked in U.S. births