Llewellyn
Boy nameLlewellyn has been given to 3,755 babies in the U.S. since 1880. It peaked in 1918. In 2025, about 1 in 106,755 boys was named Llewellyn.
Meaning & origin /ləˈwɛlɪn/
From Welsh Llywelyn.
Origin: Welsh
Etymology adapted from Wiktionary, licensed CC BY-SA 4.0.
Popularity over time births per year, 1880–2025
Total babies
3,755
Peak year
1918 (79 babies)
Rank in 2025
Below top 1000
First recorded
1880
10-year trend
▲ +69%
Gender split
9% girls / 91% boys
Rank through the decades
Llewellyn's rank among U.S. boy names at 25-year milestones.
| Year | Boys rank |
|---|---|
| 1925 | #966 |
— means outside the top 1000 that year.
Names with a similar vibe
Same primary gender, peaked around the same years, and roughly as common as Llewellyn.
FAQ
How popular is the name Llewellyn?
Llewellyn has been given to 3,755 babies in the U.S. since 1880. It ranked below the top 1000 in 2025.
When did the name Llewellyn peak?
Llewellyn peaked in 1918, when 79 babies were given the name.
Is Llewellyn a girl or boy name?
Llewellyn is primarily a boy name (91% of babies named Llewellyn are boys).
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