Alasdair meaning, boyAlasdair

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Meaning and name origin

Alasdair \a-las-dair, al(a)-sdair\ as a boy's name (also used as girl's 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.

For more information, see also the related boy name Alastair.


Alasdair is not a popular first name for males and an equally uncommon surname or last name for all people (2000 U.S. Census).

Displayed below is a comparison of the popularity of the boy name Alasdair and related names. Popular variation forms ranked in the Top 1000/100 are Alexander (#8) and Alistair. (2014 statistics).

Top 1000 baby names ranking of Alexander in U.S.

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

Similar Names

Alasdair is also pronounced similarly to Alaisdair, Alisdair, Allysdair and Alysdair. Other suggested similar baby names are Alaistair, Alasteir and Alystair. Like Alasdair, these names are not commonly used.