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Tonni

Girls' name

Diminutive of Anton

Tonni has been given to 261 babies in the U.S. since 1946. 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 1963, with 16 recorded.

Babies named Tonni, 2004

1 in 764,000

Tonni over time, 1880–2025

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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Tonni: meaning, origin, and history

Diminutive of Anton

Deeper origin not confirmed in the cited records

What Tonni means

Tonni is a diminutive of Anton.

Origin, language, and formation

Tonni is used in Danish and Faroese.

Related names and everyday forms

Related names include Anton.

American usage and historical context

In the United States, 261 girls were recorded with the name Tonni between 1946 and 2004. Its highest annual count was 16 in 1963; its best national rank was #3,323 in 1963.

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 Tonni?

Tonni had fewer than 5 recorded uses in 2025, so these figures use 2004, the last year it was published.

Among all babies, 2004
1 in 764,000
5 of 3,820,181 births
Among girls only
1 in 367,000
<0.01% of girls
Rank, 2004
Unranked
Fewer than 5 uses
Coin-flip room size
529,591 kids
Even odds of a second one

Where Tonni sits on the popularity scale

Rarest published (5 a year)#1 — Olivia (13,544)

Chance at least one other child shares the name

If the other children were drawn at random from the 2004 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 529,591 children born in 2004 and it's an even bet that one of them is another Tonni. In a class of 30 the chance is Under 1%.

When Tonnis were born

Half of everyone ever recorded as Tonni was born before 1966 — so the typical Tonni is around 59 today.

Median birth year
1966
About 59 years old
Biggest decade
1960s
39.1% of all use
Born in the last 25 years
20.7%
Spread across generations
Recorded since 1950
251
People you could plausibly meet
Choose a decade

1960s — 39.1% of all recorded uses (102).

Is Tonni 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 1963 (16)
Years since peak
62
Years
Year-to-year steadiness
Volatile
36.3% average annual change
Best rank ever
#3,323
1963

Spellings of Tonni

Tonni is not the most common spelling — Donna is, with 44.1% against Tonni's 0.01%.

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.

Tonni around the world

Where Tonni 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.

  • South Australia
    1961–1997
    #681
    in 1997

Popularity data from Consumer and Business Services (South Australia). CBS SA data under CC BY 4.0.

Tonni by the numbers

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

As a girl's name

Rank in 2025
Unranked
Trend vs 5 yrs ago
—
Best rank ever
#3,323
1963
Peak year
1963
16 that year
First recorded
1946
Last recorded
2004
All-time count
261
Count in 2025
Under 5

Names similar to Tonni

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

YanniKenniLenniToneyToneeTongaWinniSonniJohnniAvanniTonicaBenniHanniKianniTonjiaTonjiTonaeJianniAlonniAyanniTonnaTonekaLianniTona

Sibling names for Tonni

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 Tonni

Top names of 1963, Tonni's peak yearThe 1960s in fullOther names that peaked in 1963Girls' names starting with T