Justas

Boys' name

Possibly lawful, legal, legitimate, through iūstus

Justas has been given to 5 babies in the U.S. since 1999. 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 1999, with 5 recorded.

Babies named Justas, 1999

1 in 738,000

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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Justas: meaning, origin, and history

Possibly lawful, legal, legitimate, through iūstus

Deeper origin not confirmed in the cited records

What Justas means

Justas belongs to the name family reached through Justas → iūstus. Its meaning is “lawful, legal, legitimate”.

Origin, language, and formation

Justas is used in Lithuanian.

Justas comes through Latin iūstus.

Related names and everyday forms

Related names include Justin and iūstus.

Pronunciation and spelling

In Lithuanian, Justas is pronounced [ˈjʊ̟stɐs].

American usage and historical context

In the United States, 5 boys were recorded with the name Justas between 1999 and 1999. Its highest annual count was 5 in 1999; its best national rank was #10,736 in 1999.

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 Justas?

Justas had fewer than 5 recorded uses in 2025, so these figures use 1999, the last year it was published.

Among all babies, 1999: 1 in 738,000; 5 of 3,692,373 births
Among boys only: 1 in 384,000; <0.01% of boys
Rank, 1999: Unranked; Fewer than 5 uses
Coin-flip room size: 511,873 kids; Even odds of a second one

Where Justas 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 1999 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 511,873 children born in 1999 and it's an even bet that one of them is another Justas. In a class of 30 the chance is Under 1%.

When Justass were born

Half of everyone ever recorded as Justas was born before 1999 — so the typical Justas is around 26 today.

Median birth year: 1999; About 26 years old
Biggest decade: 1990s; 100.0% of all use
Born in the last 25 years: 100.0%; A modern name
Recorded since 1950: 5; People you could plausibly meet

Choose a decade

1990s — 100.0% of all recorded uses (5).

Is Justas 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 1999 (5)
Years since peak: 26; Years
Year-to-year steadiness: Not enough data; Too few years
Best rank ever: #10,736; 1999

Spellings of Justas

Justas is not the most common spelling — Justin is, with 95.8% against Justas's <0.01%.

Justin95.8%790,469
Justus1.1%9,140
Justyn0.53%4,398
Gustav0.52%4,267
Justen0.49%4,056
Josias0.43%3,517
Juston0.31%2,524
Justo0.21%1,737

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.

Justas around the world

Where Justas 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.

England & Wales
2007–2017
#3,996
in 2017
Ireland
2009–2015
#615
in 2015

Popularity data from Office for National Statistics and Central Statistics Office. ONS data under Open Government Licence v3.0. CSO data under CC BY 4.0.

Justas 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: #10,736; 1999
Peak year: 1999; 5 that year
First recorded: 1999
Last recorded: 1999
All-time count: 5
Count in 2025: Under 5

Names similar to Justas

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

Justys Justic Justiz Justi Justhin Justain Justina Jusus Justion Just Jushawn Jussiah Justiss Gustas Jusuf Mantas Quantas Rimantas Justian Justiniano Jusin Vytas Vitas Jusiah

Sibling names for Justas

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

Tatianna Caleigh Chyna Kaylah Calista Destini Carson Kayley

For a brother

Marshal Maximillian Reyes Stone Devyn Garrison Tyrese Donavon

Explore around Justas

Top names of 1999, Justas's peak year The 1990s in full Other names that peaked in 1999 Boys' names starting with J Lithuanian Boy Names