Llewellyn
How to say it: loo-EL-in · /luˈɛlɪn/
Welsh, possibly 'lion-like'; princely medieval name - borne by Welsh princes Llywelyn.
Llewellyn was the 4,818th most popular boys’ name in the United States in 2025, given to 27 babies of either sex (Social Security Administration). Its busiest decade was the 1910s, its births are up about 52% in ten years, and it is projected to rise to #3,542 by 2030.
Updated · SSA 2025 data, published May 2026 · How we compute these figures
Key facts
| Rank among boys’ names, 2025 | #4,818 |
|---|---|
| Babies born in 2025 (both sexes) | 27 |
| Share of births | 1 in 122,790 |
| Peak decade | 1910s |
| Change over 10 years | +52% |
| Projected rank for 2030 (estimate) | #3,542 |
Sources: Social Security Administration (SSA). How we compute these figures.
Its life, decade by decade
Llewellyn peaked in the 1910s.
What goes with it
In the classroom
In a class of 25 children born in 2025, the chance that another child is called Llewellyn is about under 1 in 200.
Around the world
This spelling is used in English, Welsh.
Famous people named Llewellyn
- Llewellyn Herbert (born 1977)South African 400 m hurdler
- Llewellyn Thomas (1903–1992)British physicist and mathematician
- Llewellyn Evans (1876–1951)Field hockey player
From Wikidata and Wikipedia
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