Lasse

Boys' name

Diminutive of Lars

Lasse has been given to 6 babies in the U.S. since 2006. 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 2006, with 6 recorded.

Babies named Lasse, 2006

1 in 659,000

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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Lasse: meaning, origin, and history

Diminutive of Lars

Latin

What Lasse means

Lasse is a diminutive of Lars.

Origin, language, and formation

Lasse is used in Danish, Finnish, Norwegian and Swedish. Its origins include Latin.

Related names and everyday forms

Related names include Lars, Lassi and Lauri.

Pronunciation and spelling

In Finnish, Lasse is pronounced /ˈlɑsːe/.

American usage and historical context

In the United States, 6 boys were recorded with the name Lasse between 2006 and 2006. Its highest annual count was 6 in 2006; its best national rank was #11,465 in 2006.

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 Lasse?

Lasse had fewer than 5 recorded uses in 2025, so these figures use 2006, the last year it was published.

Among all babies, 2006: 1 in 659,000; 6 of 3,956,166 births
Among boys only: 1 in 343,000; <0.01% of boys
Rank, 2006: Unranked; Fewer than 5 uses
Coin-flip room size: 457,035 kids; Even odds of a second one

Where Lasse 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 2006 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 457,035 children born in 2006 and it's an even bet that one of them is another Lasse. In a class of 30 the chance is Under 1%.

When Lasses were born

Half of everyone ever recorded as Lasse was born before 2006 — so the typical Lasse is around 19 today.

Median birth year: 2006; About 19 years old
Biggest decade: 2000s; 100.0% of all use
Born in the last 25 years: 100.0%; A modern name
Recorded since 1950: 6; People you could plausibly meet

Choose a decade

2000s — 100.0% of all recorded uses (6).

Is Lasse 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 2006 (6)
Years since peak: 19; Years
Year-to-year steadiness: Not enough data; Too few years
Best rank ever: #11,465; 2006

Spellings of Lasse

Lasse is not the most common spelling — Jesse is, with 64.4% against Lasse's <0.01%.

Jesse64.4%432,428
Lance15.8%105,839
Lane7.1%47,562
Jase3.6%23,905
Layne2.1%14,355
Case1.5%9,926
Blaise1.3%8,768
Lars1.0%7,035

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.

Lasse around the world

Where Lasse 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.

Norway
1880–2025
#232
in 2025

Popularity data from Statistics Norway. SSB data under CC BY 4.0.

Lasse 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: #11,465; 2006
Peak year: 2006; 6 that year
First recorded: 2006
Last recorded: 2006
All-time count: 6
Count in 2025: Under 5

Names similar to Lasse

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

Lasai Lasiah Lasco Lashaw Lassen Lashay Lastat Josse Musse Lasana Lashane Lashad Lastarza Lason Isse Lassana Laster Lasedrick Lascelles Chasse Lash Lashan Lashone Lasaro

Sibling names for Lasse

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

Taniya Melia Jazmyne Jayna Nyasia Tayla Estefany Sanaa

For a brother

Paulo Yair Tye Deshaun Oswaldo Nathen Britton Mauro

Explore around Lasse

Top names of 2006, Lasse's peak year The 2000s in full Other names that peaked in 2006 Boys' names starting with L