Tanzi

Girls' name

Form of Costanzo

Tanzi has been given to 10 babies in the U.S. since 1970. 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 1970, with 5 recorded.

Babies named Tanzi, 2011

1 in 732,000

Tanzi over time, 1880–2025

Girls

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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Tanzi: meaning, origin, and history

Form of Costanzo

Deeper origin not confirmed in the cited records

What Tanzi means

Tanzi is a form of Costanzo.

Origin, language, and formation

Tanzi is used in Italian.

Related names and everyday forms

Related names include Costanzo.

Pronunciation and spelling

In Italian, Tanzi is pronounced /ˈtan.t͡si/.

American usage and historical context

In the United States, 10 girls were recorded with the name Tanzi between 1970 and 2011. Its highest annual count was 5 in 1970; its best national rank was #9,195 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.

Wiktionary material is available under CC BY-SA 4.0.

How common is Tanzi?

Tanzi had fewer than 5 recorded uses in 2025, so these figures use 2011, the last year it was published.

Among all babies, 2011: 1 in 732,000; 5 of 3,657,935 births
Among girls only: 1 in 352,000; <0.01% of girls
Rank, 2011: Unranked; Fewer than 5 uses
Coin-flip room size: 507,099 kids; Even odds of a second one

Where Tanzi 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 2011 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 507,099 children born in 2011 and it's an even bet that one of them is another Tanzi. In a class of 30 the chance is Under 1%.

When Tanzis were born

Half of everyone ever recorded as Tanzi was born before 1970 — so the typical Tanzi is around 55 today.

Median birth year: 1970; About 55 years old
Biggest decade: 1970s; 50.0% of all use
Born in the last 25 years: 50.0%; Spread across generations
Recorded since 1950: 10; People you could plausibly meet

Choose a decade

1970s — 50.0% of all recorded uses (5).

Is Tanzi 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 1970 (5)
Years since peak: 55; Years
Year-to-year steadiness: Not enough data; Too few years
Best rank ever: #9,195; 1970

Spellings of Tanzi

Tanzi is not the most common spelling — Tanya is, with 25.6% against Tanzi's <0.01%.

Tanya25.6%116,855
Toni22.0%100,198
Tami8.3%37,927
Randi6.5%29,663
Tania6.3%28,891
Tammi3.0%13,884
Dani2.3%10,339
Sandi2.2%10,101

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.

Tanzi 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: #9,195; 1970
Peak year: 1970; 5 that year
First recorded: 1970
Last recorded: 2011
All-time count: 10
Count in 2025: Under 5

Names similar to Tanzi

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

Tanari Tanoa Tante Tansley Tanni Tanha Tanaa Tansi Tannar Tanah Taneca Tandie Tansha Tangle Tanila Tankia Tanvir Tango Tanyea Taniha Tanyja Tanyel Taniel Tancy

Sibling names for Tanzi

Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.

For a sister

Nicolle Janeen Corinna Marlo Lashawn Shonda Jeana Jeanna

For a brother

Judd Douglass Alfonzo Edwardo Shon Brant Scot Darrick

Explore around Tanzi

Top names of 1970, Tanzi's peak year The 1970s in full Other names that peaked in 1970 Girls' names starting with T