MallowbyNames

Antonius

an-TOH-nee-us · Of uncertain origin; possibly meaning 'priceless' or 'flourishing'.

Peak popularity
1992
Usually for
Boys
Trend
Holding steady

Holding steady.

Popularity of Antonius since 1961

Babies named Antonius per year in U.S. Social Security records.

71320198020002020Most births 1992Boys
Data table (by decade)
DecadeBoys
1960s29
1970s120
1980s94
1990s133
2000s100
2010s103
2020s43

Meaning & origin

Antonius is a distinctly rare name in modern use. It was first recorded in 1961, but has never entered the top 1000; its peak year, 1992, likely saw only a handful of births. The name has remained stable in the decades since. As a direct Latin form, it carries the weight of Roman history, connecting to the famous Mark Antony. Despite its obscurity in birth records, Antonius offers a connection to classic roots, similar to names like Augustus or Marcus.

Antonius is a Roman family name of uncertain etymology. It may be related to the Etruscan root 'ant-' meaning 'priceless', or from the Greek 'anthos' meaning 'flower'. The name is best known as the nomen (family name) of Marcus Antonius (Mark Antony), the Roman politician and general. In later periods, Antonius was used as a baptismal name, especially in Catholic and Orthodox traditions, and gave rise to the widespread given names Anthony and Antoine.

Nicknames & variants

Nicknames: Anton, Tony

Variants: Antonio, Anthony, Anton

Sibling names for Antonius

Names that share Antonius's style, for a brother or sister.

A parent animal hugging its little one, the personalized name page

A is for Antonius, our favorite little boy.

A is for Antonius…”

In a Mallowby alphabet book, Antonius's letter becomes Antonius's page: hand-illustrated, printed hardcover or paperback, made just for them.

Make Antonius's book

Books for siblings or grandkids? The second book is 15% off.

Questions parents ask

What does the name Antonius mean?
The meaning of Antonius is uncertain. It is an ancient Roman family name, possibly meaning 'priceless' or 'flourishing', but its exact origin is debated.
How popular is Antonius?
Antonius is a very rare name in the modern United States. In 2025, it did not rank in the top 1000 names. Its peak year of usage was 1992.
Is Antonius a boy's name or a girl's name?
Antonius is almost exclusively used as a boy's name.