Uuno

Boys' name

One, through Uno

Uuno has been given to 6 babies in the U.S. since 1920. 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 1920, with 6 recorded.

Babies named Uuno, 1920

1 in 377,000

Uuno over time, 1880–2025

Boys

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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Uuno: meaning, origin, and history

One, through Uno

Old Norse

What Uuno means

Uuno belongs to the name family reached through Uuno → Uno. Its meaning is “one”.

Origin, language, and formation

Uuno is used in Estonian and Finnish. Its origins include Old Norse.

Uuno comes through Swedish Uno.

Related names and everyday forms

Related names include Uno.

Pronunciation and spelling

In Finnish, Uuno is pronounced /ˈuːno/.

American usage and historical context

In the United States, 6 boys were recorded with the name Uuno between 1920 and 1920. Its highest annual count was 6 in 1920; its best national rank was #4,248 in 1920.

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 Uuno?

Uuno had fewer than 5 recorded uses in 2025, so these figures use 1920, the last year it was published.

Among all babies, 1920: 1 in 377,000; 6 of 2,262,602 births
Among boys only: 1 in 177,000; <0.01% of boys
Rank, 1920: Unranked; Fewer than 5 uses
Coin-flip room size: 261,387 kids; Even odds of a second one

Where Uuno sits on the popularity scale

Rarest published (5 a year)#1 — Liam (20,818)

Chance at least one other child shares the name

If the other children were drawn at random from the 1920 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 261,387 children born in 1920 and it's an even bet that one of them is another Uuno. In a class of 30 the chance is Under 1%.

When Uunos were born

Half of everyone ever recorded as Uuno was born before 1920 — so the typical Uuno is around 105 today.

Median birth year: 1920; About 105 years old
Biggest decade: 1920s; 100.0% of all use
Born in the last 25 years: 100.0%; A modern name
Recorded since 1950: 0; People you could plausibly meet

Choose a decade

1920s — 100.0% of all recorded uses (6).

Is Uuno 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 1920 (6)
Years since peak: 105; Years
Year-to-year steadiness: Not enough data; Too few years
Best rank ever: #4,248; 1920

Spellings of Uuno

Uuno is not the most common spelling — Hugo is, with 34.4% against Uuno's <0.01%.

Hugo34.4%37,482
Bruno17.3%18,875
Gino12.1%13,145
Dino8.5%9,219
Lino3.8%4,188
Reno3.8%4,160
Geno3.4%3,725
June3.3%3,627

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.

Uuno by the numbers

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

As a boy's name

Rank in 2025: Unranked
Trend vs 5 yrs ago: —
Best rank ever: #4,248; 1920
Peak year: 1920; 6 that year
First recorded: 1920
Last recorded: 1920
All-time count: 6
Count in 2025: Under 5

Names similar to Uuno

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

Yuno Kuno Juno Nuno Uno Tauno Ogheneruno Bruno

Sibling names for Uuno

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

Norine Vina Mozelle Marcelle Oleta Syble Adella Mittie

For a brother

Junius Dock Rupert Orin Otha Hilton Casimir Edd

Explore around Uuno

Top names of 1920, Uuno's peak year The 1920s in full Other names that peaked in 1920 Boys' names starting with U