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Aleksej

#9,758 in 2025Boys' name

Form of Alexius

Aleksej has been given to 29 babies in the U.S. since 2018. In 2025 it ranked #9,758 of 13,926 boys’ names in use. Its peak year was 2025, with 7 recorded.

Babies named Aleksej, 2025

1 in 474,000

Aleksej over time, 1880–2025

Boys
0246818801900192019401960198020002020

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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Aleksej: meaning, origin, and history

Form of Alexius

Ancient Greek

What Aleksej means

Aleksej is a form of Alexius.

Meaning behind the documented name family

The name developed through Aleksej → Alexius. The family’s meaning is “helper, defender”, recorded in English with the source elements Álexis.

Origin, language, and formation

Aleksej is used in Serbo-Croatian and Swedish. Its origins include Ancient Greek.

Related names and everyday forms

Related names include Alexius and Алексе́й.

Pronunciation and spelling

In Serbo-Croatian, Aleksej is pronounced /alěksej/.

American usage and historical context

In the United States, 29 boys were recorded with the name Aleksej between 2018 and 2025. Its highest annual count was 7 in 2025; its best national rank was #9,758 in 2025.

Sources & methodologyReferences, data & attribution

Meaning, origin, and language notes draw on the references below.

American popularity figures use published Social Security Administration records for this exact spelling. Counts below five for a name, sex, and year are omitted.

Wiktionary material is available under CC BY-SA 4.0.

How common is Aleksej?

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

Among all babies, 2025
1 in 474,000
7 of 3,315,165 births
Among boys only
1 in 244,000
<0.01% of boys
Rank, 2025
#9,758
of 13,926 boys’ names in use
Coin-flip room size
328,272 kids
Even odds of a second one

Where Aleksej 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 328,272 children born in 2025 and it's an even bet that one of them is another Aleksej. In a class of 30 the chance is Under 1%.

When Aleksejs were born

Half of everyone ever recorded as Aleksej was born before 2021 — so the typical Aleksej is around 4 today.

Median birth year
2021
About 4 years old
Biggest decade
2020s
65.5% of all use
Born in the last 25 years
100.0%
A modern name
Recorded since 1950
29
People you could plausibly meet
Choose a decade

2020s — 65.5% of all recorded uses (19).

Is Aleksej 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
+1,242
Places climbed
Rank vs 5 years ago
New entry
Not ranked then
Rank vs 10 years ago
—
Not ranked then
Births vs 10 years ago
—
Not published both years
Share of its own peak
100.0%
Peak was 2025 (7)
Years since peak
Peaking now
At its all-time high
Year-to-year steadiness
Steady
8.3% average annual change
Best rank ever
#9,758
2025

Spellings of Aleksej

Aleksej is not the most common spelling — Aleksey is, with 95.2% against Aleksej's 4.8%.

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.

Aleksej around the world

Where Aleksej 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
    2015–2022
    #4,790
    in 2022
  • Ireland
    2018–2018
    #749
    in 2018
  • France
    2018–2023
    #5,289
    in 2023
  • South Australia
    1968–1968
    #359
    in 1968

Popularity data from Office for National Statistics, Central Statistics Office, Institut national de la statistique et des études économiques and Consumer and Business Services (South Australia). ONS data under Open Government Licence v3.0. CSO, CBS SA data under CC BY 4.0. INSEE data under Licence Ouverte / Etalab 2.0.

Aleksej by the numbers

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

As a boy's name

Rank in 2025
#9,758
Trend vs 5 yrs ago
New entry
Best rank ever
#9,758
2025
Peak year
2025
7 that year
First recorded
2018
Last recorded
2025
All-time count
29
Count in 2025
7

Names similar to Aleksej

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

AlexissAlehkyeAlexielAleksiAlegendAlejandoAlexanerAleandroAlexaderAlemiAlecxisAlexcisAlexsonAlexiosAlexiaAlessoAlexanAlexonAlekaiAleksyAlericAleanderAlekseiAleki

Sibling names for Aleksej

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 Aleksej

Top names of 2025, Aleksej's peak yearThe 2020s in fullOther names that peaked in 2025Boys' names starting with A