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Alastor

#2,451 in 2025Boys' name

To defend, through Alasdair

Alastor has been given to 394 babies in the U.S. since 2011. In 2025 it ranked #2,451 of 13,926 boys’ names in use. Its peak year was 2024, with 83 recorded.

Babies named Alastor, 2025

1 in 60,300

Alastor over time, 1880–2025

Boys
025507510018801900192019401960198020002020

Based on births in the U.S. Babies given the name each year. Hover the chart — or focus it and use the arrow keys — for any year. Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Alastor: meaning, origin, and history

To defend, through Alasdair

Scottish Gaelic

What Alastor means

Alastor belongs to the name family reached through Alastor → Alasdair. Its meaning is “to defend”.

Dictionary etymologyReferences, data & attribution

From Scottish Gaelic Alasdair, Alastair, from Old Irish Alaxander.

Excerpt from Wiktionary: Alastor (English) · CC BY-SA 4.0

Wiktionary material is available under CC BY-SA 4.0.

Origin, language, and formation

Alastor is used in English. Its origins include Scottish Gaelic.

Alastor comes through Scottish Gaelic Alasdair and Old Irish Alaxander.

Related names and everyday forms

Related names include Alasdair.

American usage and historical context

In the United States, 394 boys were recorded with the name Alastor between 2011 and 2025. Its highest annual count was 83 in 2024; its best national rank was #1,902 in 2024.

Over 5 years its rank rose, from #4,142 in 2020 to #2,451 in 2025. Over 10 years its rank rose, from #7,504 in 2015 to #2,451 in 2025.

How common is Alastor?

Everything below is computed from the 2025 data — the most recent year available.

Among all babies, 2025
1 in 60,300
55 of 3,315,165 births
Among boys only
1 in 31,100
<0.01% of boys
Rank, 2025
#2,451
of 13,926 boys’ names in use
Coin-flip room size
41,781 kids
Even odds of a second one

Where Alastor sits on the popularity scale

Rarest published (5 a year)#1 — Liam (20,818)

Chance at least one other child shares the name

If the other children were drawn at random from the 2025 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.

Class of 20Under 1%
Class of 30Under 1%
Grade of 100Under 1%
School of 500Under 1%

Put another way: gather 41,781 children born in 2025 and it's an even bet that one of them is another Alastor. In a class of 30 the chance is Under 1%.

When Alastors were born

Half of everyone ever recorded as Alastor was born before 2022 — so the typical Alastor is around 3 today.

Median birth year
2022
About 3 years old
Biggest decade
2020s
68.5% of all use
Born in the last 25 years
100.0%
A modern name
Recorded since 1950
394
People you could plausibly meet
Choose a decade

2020s — 68.5% of all recorded uses (270).

Is Alastor rising or falling?

Rank movement and count movement can disagree — the number of distinct names in use keeps growing, so a name holding a steady count still slides down the list. Both are shown.

Rank vs 1 year ago
−549
Places dropped
Rank vs 5 years ago
+1,691
Places climbed
Rank vs 10 years ago
+5,053
Places climbed
Births vs 10 years ago
5.50×
More babies than then
Share of its own peak
66.3%
Peak was 2024 (83)
Years since peak
1
Years
Year-to-year steadiness
Volatile
41.7% average annual change
Best rank ever
#1,902
2024

Spellings of Alastor

Alastor is not the most common spelling — Alston is, with 43.0% against Alastor's 6.6%.

Grouped by closeness of spelling (up to two letter changes), same sex, with a floor on all-time use. It catches Sophia/Sofia and Aiden/Ayden, and misses spellings that sound alike but look different, like Sean and Shawn.

Where Alastor is used

Across 1910–2025, Alastor was most concentrated in California — about 1 in — boys, against 1 in 1,078,547 across all states with data. It was least common in Texas (1 in —).

00 per 100,000

Most concentrated

  1. 1California1 in —
  2. 2Florida1 in —
  3. 3Ohio1 in —
  4. 4Pennsylvania1 in —
  5. 5Texas1 in —

Shading is the share of that state's recorded boys given this name, not the raw count — otherwise the map would just show which states are biggest. Unshaded states have no published records for this period. U.S. birth records suppress state-year counts below 5; state counts therefore don't add up to the national total. Every state links to its full rankings. Alastor has too little recent state data to map, so this covers all years from 1910.

Alastor around the world

Where Alastor ranks in official birth records elsewhere in the world. Rankings only — the number of births isn’t comparable between places, so it isn’t shown.

  • England & Wales
    2024–2025
    #3,684
    in 2025
  • Canada
    2024–2024
    #3,231
    in 2024

Popularity data from Office for National Statistics and Statistics Canada. ONS data under Open Government Licence v3.0. StatCan data under Statistics Canada Open Licence.

Alastor by the numbers

The raw record for each sex the name is used for.

As a boy's name

Rank in 2025
#2,451
Trend vs 5 yrs ago
Up 1,691
Best rank ever
#1,902
2024
Peak year
2024
83 that year
First recorded
2011
Last recorded
2025
All-time count
394
Count in 2025
55

Names similar to Alastor

Matched on shared beginnings and endings, similar length, and comparable popularity.

AladdinAlanzoAlarikAlasdairAlasterAlarickAlazarAlaminAlakaiAlassaneAlastairAlansonCastorHeitorAlakayAlanteAlamAlanoAlastarAlaaAlandoAlannAlaniAlandis

Sibling names for Alastor

Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.

Explore around Alastor

Top names of 2024, Alastor's peak yearThe 2020s in fullOther names that peaked in 2024Boys' names starting with A