Tonja
Feminine
Tonja is overwhelmingly a girls’ name — 6,989 girls against 5 boys since 1880.
Tonja can come from two directions and the j is the clue to which. Read as Scandinavian it is Tonja, a Norwegian and Danish spelling where j says the sound English writes as y. Read as American it is Tonya respelled, or Antonia cut down to its middle. Both are in the record and the spelling does not choose.
How old is the name Tonja?
Tonja first appears in US birth records in 1940 — 85 years ago. The typical Tonja alive today was born around 1968, making them about 57 years old. About 6,400 people named Tonja are estimated to be alive in the US today.
When was the name Tonja most popular?
Tonja peaked in 1967, reaching #407 nationally. See the whole 1967 chart.
Where it comes from
Origin, sound and short forms
The story of Tonja
The j in Norwegian and Danish is a consonant that English writes as y, which is why Tonja, Sonja and Katja all look strange to English eyes and are perfectly regular in their own languages. Scandinavian emigration brought all three to America, where they were adopted well beyond the families that carried them in. At the same time American naming was producing Tonya from Antonia and from Tanya, so the same four letters arrived from two directions in the same decades. A reader cannot tell which, and neither can the record.
Meaningscholars disagree
Not established
If Tonja shortens Antonia, the meaning question ends in a blank, because Antonius is a Roman family name that is probably Etruscan and has never been recovered. If it respells Tonya, the trail runs through Tatiana to another Roman family name, Tatius, which is Sabine and equally unrecoverable. So both roads lead to Roman families whose names nobody can translate, which is an unusual amount of consistency in an unusual amount of uncertainty.
Pronouncing Tonja
TAHN-yuh
TAHN-yuh, two syllables, stress at the front, the j sounded as a y. English readers meeting the spelling cold often produce TAHN-juh, treating the j as English, which is the single most common thing that happens to this name here.
Nicknames for Tonja
Moderate
What the data says
146 years of official birth records
The long climb, and where it stands now
The same years in position rather than babies
- First recorded
- 1940
- Most girls named
- 1967512 — the highest on record
- Peak rank
- #407reached in 1967
- Change vs 2002
- −45.5%6 in 2005, from 11
Rank is a position, a count is a headcount, and they move independently — a name can hold its rank while the number of babies behind it falls. Source: U.S. Social Security Administration.
Tonja in other languages
The same name elsewhere
- Tonja in Norwegian — same name
- Tonja in Danish — same name
- Tonya in Russian — related form
Tonjas among us
people named Tonja are estimated to be alive in the US today
Estimated from SSA birth records and published actuarial life tables. Method
Is it right for you
Questions parents actually ask
Fashion outlook
Tonja sits outside the current charts, and that is its own kind of answer: naming cycles can only date the names they carried up. A name this rare has no decade stamped on it — it cannot go out of fashion, because it was never in.
Based on 146 years of naming cycles. How we read them
The trade-off
- It is a standard Scandinavian spelling rather than an American respelling of anything.
- Toni is a ready short form that works in any English-speaking setting.
- Two syllables, front-stressed, and comfortable against almost any surname.
- English has no rule turning j into y, so the name is mispronounced by most people who read it before hearing it.
- Tonya is the American spelling that removes the problem, and it will be substituted.
- Both possible origins end in unrecoverable Roman family names, so no meaning is available.
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Tonja
Feminine
Frequently asked
- How many Tonjas are there in the world?
- No country counts the world's names, so there is no worldwide figure — anyone quoting one is estimating. About 6,400 people named Tonja are estimated to be alive in the US today.
- How popular is the name Tonja in 2025?
- Tonja is rarely given in the US today — it does not rank in the top 2000 girl names.
- Will my child share the name Tonja with classmates?
- Tonja will almost certainly be the only one in school.
More T names
The most-given names starting with T, all years combined.
Teresa#908 · Theresa#1548 · Tiffany#878 · Tammy#3645 · Taylor#403 · Tina#2778 · Tracy#2153 · Thelma#4661
Looking for what else is popular rather than what resembles Tonja? See the current top 100.
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US figures from the Social Security Administration. 1880–2025. Data & methodology
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