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Antonius

Boys' name

Form of Anthony

Antonius has been given to 622 babies in the U.S. since 1961. It was used fewer than 5 times in 2025, so it doesn't appear in the latest year's list — today it's a genuinely uncommon pick. Its peak year was 1992, with 20 recorded.

Babies named Antonius, 2024

1 in 334,000

Antonius over time, 1880–2025

Boys
0510152018801900192019401960198020002020

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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Antonius: meaning, origin, and history

Form of Anthony

Deeper origin not confirmed in the cited records

What Antonius means

Antonius is a form of Anthony.

Documented naming usage and pronunciation

Antonius is used in Ancient Roman and Dutch.

Another recorded pronunciation is /an.ˈtoː.ni.us/, /æn.ˈtoʊ.ni.əs/ and /ɑn.ˈtoː.ni.jʏs/ for Antonius.

Related names and everyday forms

Related names include Anthony.

American usage and historical context

In the United States, 622 boys were recorded with the name Antonius between 1961 and 2024. Its highest annual count was 20 in 1992; its best national rank was #2,296 in 1970.

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.

How common is Antonius?

Antonius had fewer than 5 recorded uses in 2025, so these figures use 2024, the last year it was published.

Among all babies, 2024
1 in 334,000
10 of 3,342,801 births
Among boys only
1 in 172,000
<0.01% of boys
Rank, 2024
Unranked
Fewer than 5 uses
Coin-flip room size
231,706 kids
Even odds of a second one

Where Antonius 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 2024 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 231,706 children born in 2024 and it's an even bet that one of them is another Antonius. In a class of 30 the chance is Under 1%.

When Antoniuss were born

Half of everyone ever recorded as Antonius was born before 1994 — so the typical Antonius is around 31 today.

Median birth year
1994
About 31 years old
Biggest decade
1990s
21.4% of all use
Born in the last 25 years
39.5%
Spread across generations
Recorded since 1950
622
People you could plausibly meet
Choose a decade

1990s — 21.4% of all recorded uses (133).

Is Antonius 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
—
Not ranked then
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
0%
Peak was 1992 (20)
Years since peak
33
Years
Year-to-year steadiness
Volatile
40.4% average annual change
Best rank ever
#2,296
1970

Spellings of Antonius

Antonius is not the most common spelling — Antonio is, with 96.6% against Antonius's 0.23%.

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.

Antonius around the world

Where Antonius 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.

  • France
    1902–1913
    #630
    in 1913
  • South Australia
    1951–1984
    #455
    in 1984

Popularity data from Institut national de la statistique et des études économiques and Consumer and Business Services (South Australia). INSEE data under Licence Ouverte / Etalab 2.0. CBS SA data under CC BY 4.0.

Antonius by the numbers

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

As a boy's name

Rank in 2025
Unranked
Trend vs 5 yrs ago
—
Best rank ever
#2,296
1970
Peak year
1992
20 that year
First recorded
1961
Last recorded
2024
All-time count
622
Count in 2025
Under 5

Names similar to Antonius

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

AntaviusAntoniosAnthonioAntariusAntonieAntwaneAnthoniAntoninoAnthonieAnteriusJavariusAntwaunClaudiusViniciusTadariusAntoinneAnthonnyAntionioTyberiusAntwoineDenariusKadariusAntwaineAntwone

Sibling names for Antonius

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 Antonius

Top names of 1992, Antonius's peak yearThe 1990s in fullOther names that peaked in 1970Boys' names starting with A