Llewellyn
- US rank
- #5,608
- Syllables
- 3
- Peak
- #576 in 1882
16 babies were named Llewellyn in the US in 2025. It has climbed 688 places in five years.
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US births per million boys, 1880–2025
Similar names
Popularity: U.S. Social Security Administration (babies with 5+ births per year).
Did you know?
A few things about Llewellyn you might not know, from US birth records. Handy for convincing a partner, or a grandparent.
- How commonAbout 1 in every 106,383 baby boys born in the US in 2025 was named Llewellyn, 16 babies in all. In a typical school of 500 kids, your Llewellyn would very likely be the only one.
- HistoryLlewellyn has been in use since at least 1880, the first year US birth records were kept. That's 145 years of Llewellyns, and counting.
- Best yearIt was far more popular in 1882, when it ranked #576. Today it's #5,608, so it could be due a comeback.
- TrendLlewellyn has climbed 688 places in the US rankings over the last five years and now sits at #5,608. Fast risers like this often keep climbing, so expect to hear it more.
- Boy or girlLlewellyn is given to both boys and girls: 59% of the 27 babies named Llewellyn in 2025 were boys. That makes it one of the names that truly works for either.
About the name Llewellyn
Llewellyn is a boy name of Scottish and Welsh origin. It has 9 letters and 3 syllables, starting with L and ending in “-lyn”. US birth records list Llewellyn for boys from 1880 to 2025, in 138 of those 146 years. Its best year was 1882, when it ranked #576 among boy names. In 2025 it ranked #5,608, with 16 babies.
Origin:Scottish namesWelsh names
| Decade | Babies per million | About 1 in |
|---|---|---|
| 1880s | 66 | 15,113 boys |
| 1890s | 73 | 13,618 boys |
| 1900s | 48 | 20,864 boys |
| 1910s | 71 | 14,134 boys |
| 1920s | 51 | 19,455 boys |
| 1930s | 39 | 25,934 boys |
| 1940s | 25 | 39,277 boys |
| 1950s | 21 | 48,146 boys |
| 1960s | 17 | 59,630 boys |
| 1970s | 14 | 71,124 boys |
| 1980s | 8.6 | 115,875 boys |
| 1990s | 3.7 | 267,380 boys |
| 2000s | 1.8 | 555,556 boys |
| 2010s | 4.3 | 232,019 boys |
| 2020s | 6.9 | 144,231 boys |
Other spellings of Llewellyn
More Scottish boy names
- Boy name: Andrew · manly
- Unisex name: Cameron · crooked nose
- Boy name: Ian · God is gracious
- Boy name: Arthur · possibly bear
- Unisex name: Kai · sea
- Boy name: Archer · bowman
- Boy name: Callum · dove
- Boy name: Graham · gravelly homestead
Questions about the name Llewellyn
What is the origin of the name Llewellyn?
Llewellyn has Scottish, Welsh roots in our records. Other Scottish names include Andrew, Cameron, Ian.
Is Llewellyn a boy or girl name?
Llewellyn is a boy name, though a few girls get it too.
How popular is the name Llewellyn?
Llewellyn ranked #5,608 for US boys in 2025, given to 16 babies. Its best year was 1882 (#576).