Alastair
Alastair: name meaning, origin and popularity
Pronunciation (IPA): /ˈæl.ə.stɚ/ · /ˈæl.ə.stə/
Meaning and origin of Alastair
Root meaning: “Alexander”
- A male given name from Scottish Gaelic.
Etymology
From Scottish Gaelic Alasdair (“Alexander”). Doublet of Alexander.
How popular is Alastair?
Since 1880, 1,364 boys in the U.S. have been named Alastair. Its highest rank for boys was #2147 in 2025. In 2025, 67 babies were given the name, outside the top 1,000.
Names similar to Alastair
Names that start with the same letters, most popular first.
More Scottish boy names
Sibling name ideas for Alastair
Sister and brother names that share Alastair's Scottish roots and are still in the U.S. top 1,000.
Alastair FAQ
What does the name Alastair mean?
Alastair traces back to a root meaning "Alexander". A male given name from Scottish Gaelic. From Scottish Gaelic Alasdair (“Alexander”). Doublet of Alexander.
What is the origin of the name Alastair?
Alastair is listed as a name of Scottish origin.
How popular is the name Alastair?
Since 1880, 1,364 boys in the U.S. have been named Alastair. Its highest rank for boys was #2147 in 2025. In 2025, 67 babies were given the name, outside the top 1,000.
Is Alastair a boy or girl name?
Alastair is mostly a boy name in the U.S.: 0 girls and 1,364 boys since 1880.
Popularity data: U.S. Social Security Administration baby name data, 1880–2025 (names given to 5+ babies per year). Origin and etymology text: Wiktionary, available under CC BY-SA 4.0.