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Llewelyn

#5,514 in 2025UnisexBoys' nameGirls' name

Lion

Llewelyn has been given to 188 babies in the U.S. since 1916. In 2025 it ranked #5,514 of 13,926 boys’ names in use. Its peak year was 2024, with 24 recorded. It's used for both sexes: 95% boys, 5% girls all-time.

Babies named Llewelyn, 2025

1 in 195,000

Llewelyn over time, 1880–2025

BoysGirls
010203018801900192019401960198020002020

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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Girls or boys — Llewelyn over time

In 2025, Llewelyn went to 0% girls and 100% boys.

19162025

A sex is only published in years it reached five applications, so a stretch at 0% or 100% means the other side stayed under that floor — not that it was never used.

Llewelyn: meaning, origin, and history

Lion

Welsh

What Llewelyn means

Llewelyn means “lion”.

Origin, language, and formation

Llewelyn is used in English. Its origins include Welsh.

Llewelyn comes through Welsh Llywelyn.

Related names and everyday forms

Related names include Llywelyn.

Pronunciation and spelling

In English, Llewelyn is pronounced /ləˈwɛlɪn/.

American usage and historical context

In the United States, 178 boys were recorded with the name Llewelyn between 1916 and 2025. Its highest annual count was 24 in 2024; its best national rank was #3,071 in 1916.

Over 5 years its rank rose, from #11,435 in 2020 to #5,514 in 2025. Over 10 years its rank rose, from #13,261 in 2015 to #5,514 in 2025.

In the United States, 10 girls were recorded with the name Llewelyn between 2017 and 2020. Its highest annual count was 5 in 2017; its best national rank was #16,534 in 2020.

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 Llewelyn?

Everything below is computed from the 2025 data — the most recent year available.

Among all babies, 2025
1 in 195,000
17 of 3,315,165 births
Among boys only
1 in 100,000
<0.01% of boys
Rank, 2025
#5,514
of 13,926 boys’ names in use
Coin-flip room size
135,172 kids
Even odds of a second one

Where Llewelyn 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 2025 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 135,172 children born in 2025 and it's an even bet that one of them is another Llewelyn. In a class of 30 the chance is Under 1%.

When Llewelyns were born

Half of everyone ever recorded as Llewelyn was born before 2019 — so the typical Llewelyn is around 6 today.

Median birth year
2019
About 6 years old
Biggest decade
2020s
46.6% of all use
Born in the last 25 years
56.7%
A modern name
Recorded since 1950
145
People you could plausibly meet
Choose a decade

2020s — 46.6% of all recorded uses (83).

Is Llewelyn 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
−1,126
Places dropped
Rank vs 5 years ago
+5,921
Places climbed
Rank vs 10 years ago
+7,747
Places climbed
Births vs 10 years ago
3.40×
More babies than then
Share of its own peak
70.8%
Peak was 2024 (24)
Years since peak
1
Years
Year-to-year steadiness
Volatile
30.2% average annual change
Best rank ever
#3,071
1916

Spellings of Llewelyn

Llewelyn is not the most common spelling — Llewellyn is, with 82.6% against Llewelyn's 4.3%.

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.

Llewelyn around the world

Where Llewelyn 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
    1996–2025
    #1,705
    in 2025
  • France
    2010–2010
    #5,246
    in 2010
  • Canada
    2021–2021
    #2,989
    in 2021
  • South Australia
    1969–2003
    #588
    in 2003

Popularity data from Office for National Statistics, Institut national de la statistique et des études économiques, Statistics Canada and Consumer and Business Services (South Australia). ONS data under Open Government Licence v3.0. INSEE data under Licence Ouverte / Etalab 2.0. StatCan data under Statistics Canada Open Licence. CBS SA data under CC BY 4.0.

Llewelyn by the numbers

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

As a boy's name

Rank in 2025
#5,514
Trend vs 5 yrs ago
Up 5,921
Best rank ever
#3,071
1916
Peak year
2024
24 that year
First recorded
1916
Last recorded
2025
All-time count
178
Count in 2025
17

As a girl's name

Rank in 2025
Unranked
Trend vs 5 yrs ago
—
Best rank ever
#16,534
2020
Peak year
2017
5 that year
First recorded
2017
Last recorded
2020
All-time count
10
Count in 2025
Under 5

Names similar to Llewelyn

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

LlewellynLleytonLochlynLlewynDecklynLeelynTrelynBrailynMacklynZaylynWeylynZailynKellynKailynWeslynLewellynGatlynTaelynJaqualynWaylynBraylynDaylynDrelynRaelyn

Sibling names for Llewelyn

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 Llewelyn

Top names of 2024, Llewelyn's peak yearThe 2020s in fullOther names that peaked in 1916Boys' names starting with LWelsh Boy Names