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Llewellyn

#5,747 in 2025UnisexBoys' nameGirls' name

Variant of Llewelyn

Llewellyn has been given to 3,755 babies in the U.S. since 1880. In 2025 it ranked #5,747 of 13,926 boys’ names in use. Its peak year was 1916, with 69 recorded. It's used for both sexes: 91% boys, 9% girls all-time.

Babies named Llewellyn, 2025

1 in 207,000

Llewellyn over time, 1880–2025

BoysGirls
02040608018801900192019401960198020002020

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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.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

In 2025, Llewellyn went to 41% girls and 59% boys.

18802025

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.

Llewellyn: meaning, origin, and history

Variant of Llewelyn

Welsh

What Llewellyn means

Llewellyn is a variant of Llewelyn.

Meaning behind the documented name family

The name developed through Llewellyn → Llewelyn. The family’s meaning is “lion”, recorded in the naming reference for Llewelyn.

Origin, language, and formation

Llewellyn is used in English. Its origins include Welsh.

Llewellyn comes through Welsh Llywelyn.

Related names and everyday forms

Related names include Llewelyn.

Pronunciation and spelling

In English, Llewellyn is pronounced /ləˈwɛlɪn/.

American usage and historical context

In the United States, 3,414 boys were recorded with the name Llewellyn between 1880 and 2025. Its highest annual count was 69 in 1916; its best national rank was #594 in 1882.

Over 5 years its rank rose, from #6,493 in 2020 to #5,747 in 2025. Over 10 years its rank rose, from #9,234 in 2015 to #5,747 in 2025.

In the United States, 341 girls were recorded with the name Llewellyn between 1906 and 2025. Its highest annual count was 17 in 1924; its best national rank was #1,649 in 1906.

Over 5 years its rank rose, from #14,418 in 2020 to #9,220 in 2025. Over 10 years its rank rose, from #12,501 in 2015 to #9,220 in 2025.

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 Llewellyn?

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

Among all babies, 2025
1 in 207,000
16 of 3,315,165 births
Among boys only
1 in 107,000
<0.01% of boys
Rank, 2025
#5,747
of 13,926 boys’ names in use
Coin-flip room size
143,620 kids
Even odds of a second one

Where Llewellyn 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 143,620 children born in 2025 and it's an even bet that one of them is another Llewellyn. In a class of 30 the chance is Under 1%.

When Llewellyns were born

Half of everyone ever recorded as Llewellyn was born before 1941 — so the typical Llewellyn is around 84 today.

Median birth year
1941
About 84 years old
Biggest decade
1920s
16.6% of all use
Born in the last 25 years
5.2%
Mostly a past generation
Recorded since 1950
1,400
People you could plausibly meet
Choose a decade

1920s — 16.6% of all recorded uses (566).

Is Llewellyn 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
+930
Places climbed
Rank vs 5 years ago
+746
Places climbed
Rank vs 10 years ago
+3,487
Places climbed
Births vs 10 years ago
2.00×
More babies than then
Share of its own peak
23.2%
Peak was 1916 (69)
Years since peak
109
Years
Year-to-year steadiness
Volatile
26.5% average annual change
Best rank ever
#594
1882

Where Llewellyn is used

Across 1910–2025, Llewellyn was most concentrated in Maine — about 1 in 12,500 boys, against 1 in 126,939 across all states with data. It was least common in North Carolina (1 in —).

08 per 100,000

Most concentrated

  1. 1Maine1 in 12,500
  2. 2Hawaii1 in 25,000
  3. 3Pennsylvania1 in 33,333
  4. 4New York1 in 100,000
  5. 5Virginia1 in 100,000
  6. 6Wisconsin1 in 100,000
  7. 7Alabama1 in —
  8. 8California1 in —

Shading is the share of that state's recorded boys given this name, not the raw count — otherwise the map would just show which states are biggest. Unshaded states have no published records for this period. U.S. birth records suppress state-year counts below 5; state counts therefore don't add up to the national total. Every state links to its full rankings. Llewellyn has too little recent state data to map, so this covers all years from 1910.

Llewellyn around the world

Where Llewellyn 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
    #3,684
    in 2025
  • Canada
    2015–2015
    #2,735
    in 2015
  • South Australia
    1944–2012
    #771
    in 2012

Popularity data from Office for National Statistics, Statistics Canada and Consumer and Business Services (South Australia). ONS data under Open Government Licence v3.0. StatCan data under Statistics Canada Open Licence. CBS SA data under CC BY 4.0.

Notable people named Llewellyn

People whose public names include Llewellyn, backed by Wikidata given-name records and ordered by linked Wikimedia pages. The name may be a middle name.

People data from Wikidata (CC0). Fame is measured, not judged — the order reflects how widely each person is documented, not the U.S. birth records popularity this page is otherwise about.

Llewellyn in other languages

Cross-language forms and variants of Llewellyn. Linked forms have their own page here.

LlewelynLlywelynLlewellin

Variant forms from Wikidata (CC0). Most are used mainly outside the United States; U.S. birth records statistics cover US usage only.

Llewellyn by the numbers

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

As a boy's name

Rank in 2025
#5,747
Trend vs 5 yrs ago
Up 746
Best rank ever
#594
1882
Peak year
1916
69 that year
First recorded
1880
Last recorded
2025
All-time count
3,414
Count in 2025
16

As a girl's name

Rank in 2025
#9,220
Trend vs 5 yrs ago
Up 5,198
Best rank ever
#1,649
1906
Peak year
1924
17 that year
First recorded
1906
Last recorded
2025
All-time count
341
Count in 2025
11

Names similar to Llewellyn

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

LlewelynFranklynBrooklynLleytonMerlynBraelynEvelynLlewynJaylynJaelynBraylynArlynCarolynGwendolynDaelynJalynBrailynCollynDeklynJailynDecklynMarlynMarilynBralyn

Names with a curve like Llewellyn

Not spelling — timing. These names rose, peaked and faded in the same years as Llewellyn, so they read as being from the same moment even when they look nothing alike.

IvyGodfreyEnnisLambertJonnieRowlandLonzoRudolfGarnettAllisonLoranAdolphus

Sibling names for Llewellyn

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 Llewellyn

Top names of 1916, Llewellyn's peak yearThe 1910s in fullOther names that peaked in 1882Boys' names starting with LWelsh Boy NamesWelsh Names