Alasdair
A boys’ name of Scottish Gaelic origin, meaning defender of men; a form of Alexander.
Alasdair by the numbers
In 2025, 15 babies in England and Wales were named Alasdair. In the US, 21 were, though that figure is from 2017, the most recent full year we hold.
For the size of the two countries, it is given several times more often in England and Wales than in the US.
Its American peak was 36 babies in 2015, making it a 2010s name.
Other names that come from Alexander
Like Alasdair, each of these traces back to Alexander: a form of it, a name built from it, or a son or daughter of it. Not always the same sex.
- Xanderdefender of mankind; short form of Alexander2,403 in the US (2017)
- Alejandrodefender of men; Spanish form of Alexander2,027 in the US (2017)
- Zanderdefender of men; a diminutive of Alexander1,551 in the US (2017)
- Alexandriadefender of mankind; a form of Alexander1,238 in the US (2017)
- Alecdefender of men; short form of Alexander569 in the US (2017)
- Alessandrodefender of men; Italian form of Alexander401 in the US (2017)
- Alexzanderdefender of men; invented spelling of Alexander226 in the US (2017)
- Aleksanderdefender of men; variant of Alexander84 in England and Wales (2025)
Spelled almost the same
Other names in the records within a letter or two of Alasdair. Close spellings are not always related names, but they are usually worth seeing together.
- Alastairdefender of men; scottish form of alexander25 in England and Wales (2025)
- Alistairdefender of men; Scottish form of Alexander75 in England and Wales (2025)
- Aldairold spear; from aldhere or aelred40 in the US (2017)
- Alastardefender of men; a form of Alexander5 in the US (2017)
- Allistairdefender of men; variant of alistair6 in the US (2017)
Other names that mean a protector
Like Alasdair, each of these has a protector in its meaning. Different names, different histories, the same idea.
- Liamresolute protector; short form of William18,764 in the US (2017)
- Williamresolute protector14,922 in the US (2017)
- Alexanderdefender of the people12,488 in the US (2017)
- Parkerkeeper of the park; park ranger5,833 in the US (2017)
- Alexisdefender, helper2,847 in the US (2017)
- Alexdefender, helper; short form of Alexander or Alexis2,766 in the US (2017)
Names about as common as Alasdair
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