Antonius
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Meaning
a Roman family name of probably Etruscan origin, the Latin form of Anthony and also the official Dutch form on birth certificates
How popular is Antonius around the world?
Antonius does not appear in US Social Security baby-name records, which list only names given to at least five babies in a year. There is no popularity curve to chart: a genuinely rare pick. In Austria, 1 boy named Antonius was born in 2025, ranked 1,842nd among boys that year, spellings that differ only by special characters counted together.
Antonius is on the official records of Austria and Spain.
United States
under 5 a year
Antonius does not appear in US Social Security baby-name records, which list only names given to at least five babies in a year. There is no popularity curve to chart: a genuinely rare pick.
Births with a Social Security record. Source: U.S. Social Security Administration
Austria
1 in 76,000
In Austria, 1 boy named Antonius was born in 2025, ranked 1,842nd among boys that year, spellings that differ only by special characters counted together.
The count never rose above 6 in a year, too few to chart.
Live births in Austria by year of birth, 1984–2025, from Statistik Austria’s first-name statistics; spellings that differ only by special characters are counted together (umlauts stay apart), every name down to a single birth is published, and the count covers babies with Austrian citizenship only until 2009, every baby from 2010, and from 2015 also births abroad to mothers living in Austria. Shares divide by Statistik Austria’s count of live births from 2010, and before that by the file’s own total for the year. Source: Statistik Austria - data.statistik.gv.at (OGDEXT_VORNAMEN_1, updated 2026-07-09)
Spain
1 in 2M
In Spain, 22 residents are named Antonius, ranked 27,795th among men, with a mean age of 63.7 years.
Residents of Spain on 1 January 2025. Spain publishes how old a name’s living bearers are, not a birth series, so there is no year chart. Source: INE (Spain), Censo de Población anual, 1 January 2025
Montevideo City
last on record 1951
Antonius is not on the 2011 record for Montevideo, whose registry withholds nothing, so the spelling was not given there that year.
The count never rose above 1 in a year, too few to chart.
Births in the department of Montevideo (not all of Uruguay) by first name and year of birth, 1940–2011, from the city’s civil registry, which writes names in capitals, almost always without accents; counted as spelling groups (accent and punctuation variants merged), nothing is withheld at source, and 2012 is excluded as a partial year. Source: Servicio de Registro Civil, Intendencia de Montevideo, Partidas de Registro Civil de Montevideo (Licencia de Datos Abiertos - Uruguay); 2012 dropped as partial
New Zealand
last on record 1956
Antonius is not on the 2025 record for New Zealand, where names under 10 in a year are excluded at source.
share of that year’s name registrations
First given names from New Zealand birth registrations, grouped by registration year; any name under 10 in a year is excluded at source. Shares divide by Stats NZ’s count of births registered to mothers living in New Zealand, under 1% below the registry’s own count. Source: Department of Internal Affairs (New Zealand), baby name popularity over time
South Australia
last on record 1984
Antonius is not on the 2017 record for South Australia, whose registry publishes every name given that year.
The count never rose above 3 in a year, too few to chart.
Births registered in South Australia (not all of Australia) by first name and year of registration, 1944–2017, from the state’s Births, Deaths and Marriages registry, which publishes every name down to a single birth in capitals; a spelling its export repeats inside a year is counted once, and from 2018 only a top 100 is published, so the series ends at 2017. Source: Consumer and Business Services (South Australia), popular baby names
Not on 11 other recordsWhy
- Not on the record in Mexico City, Argentina, Puerto Rico, England and Wales, Canada, Ireland, Scotland and Poland: those registries withhold small counts, so rare uses may sit below their floors.
- Not on the Chile record: nametree keeps spellings that reached 5 registrations in some year, so rarer uses are not shown.
- Not on the France record: nametree keeps spellings that reached 20 births in some year, so rarer uses are not shown.
- Not on Norway’s list: Statistics Norway lists only first names carried by 200 or more living people, so rarer names are not shown.
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The Antonius deep dive
Whether you’re naming a baby or exploring your own name’s history, this is a personal letter, not a list: where Antonius truly comes from, how it traveled, and what a century of records reveals. If you have grown a tree on nametree, it also considers how Antonius fits with your family’s names and surname.
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