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What does Alasdair mean?

Alasdair Pronunciation of Alasdair [alas-dair] as a boys' name (also used as girls' name Alasdair) is pronounced AL-as-dare. It is of Greek origin, and the meaning of Alasdair is "man's defender". Scottish Gaelic form of Alexander, often anglicized as Alistair.

Affiliated boy name: Alastair.

Associated with: greek, defender, scottish, gaelic.


8 alternative forms via Alexander, Alistair: Alastair, Alaster, Alastor, Alisdair, Alistair, Alistaire, Alistir and Allistair.

Creative forms:


Middle name pairings:
Alasdair Gabe (A.G.), ..

How popular is Alasdair?

Alasdair is an uncommon first name for males and an equivalently unique surname too for both adults and children. (2000 U.S. Census)

Which version is better?

with similar and related boy names. Prominent variation forms of Alasdair (outside Top 2000) ranked in the Top 2000 are Alexander (#8 in 2015) and Alistair (#1031). These relations of Alasdair were popular in the year 1993 (adoption of 1.05%) and are almost as popular today (adoption 0.77%, 26%). Alexander is the continual favorite, although Alistair appears to be gaining popularity too. (2015 Birth Statistics)

Top 2000 baby names ranking of Alexander, Alistair in U.S.

Top 100 baby names ranking of Alexander, Alistair outside U.S.

Similar Names

Alasdair is pronounced similarly to Alaisdair, Allysdair, Alysdair and Alysdare. Other suggested similar names are Aadi, Abishai, Adair, Adaire, Adar, Alair, Alaire, Alaistair, Alaister, Alamar, Alard, Alaric, Alasteir, Alavaro, Alcadio, Alcander, Alcedio, Aldan, Aldin, Aldis, Aldric, Aldrin, Aldwin, Alester, Alistar, Alister, Allain, Allaistar, Allaster, Allastir, Allgar (see Alger), Allistir, Alltair, Allvar, Allystair, Alomar, Alsandare, Alsdon (see Alston), Alstin, Altaer, Altair, Alystair, Alyster, Amadei, Amadi, Amadis, Amador, Amadour, Amasa, Amishar, Anastagio, Anastas, Anastasio, Artair, Avishai, Avishar, Blair, Casimir, Casmir, Clair, Ellair, Kadir, Kasimir, Nadeir, Nadir, Nasir, Qadir, Slavomir, Vladamir, Vladimir and Wladimir. These names tend to be more frequently used than Alasdair.

See names
in meaning and etymology.