MallowbyNames

Llewellyn

hloo-EL-in · Like a lion; lion-like

2025 rank (boys)
#5,608
Babies named in 2025
16
Peak popularity
1894
2025 frequency
1 in 106,755 boys
Usually for
Girls & boys
Trend
Rising since 2008

A 1890s favorite, climbing again.

Popularity of Llewellyn since 1880

Babies named Llewellyn per year in U.S. Social Security records. Raw births topped out in 1916, but relative to how few babies were recorded back then, Llewellyn's real moment was 1894.

2346691880192019602000Most births 1916GirlsBoys
GirlsBoys
Data table (by decade)
DecadeGirlsBoys
1880s072
1890s084
1900s1364
1910s65452
1920s72566
1930s73407
1940s30369
1950s24421
1960s0326
1970s0232
1980s0159
1990s073
2000s636
2010s1381
2020s4572

Meaning & origin

Llewellyn is a classic Welsh name with deep historical roots, meaning 'lion-like' or 'leader.' It first entered U.S. records in 1880, and its highest popularity came in 1894, when it peaked in use. Since 2008, the name has been experiencing a resurgence, rising in the rankings after decades of decline. Though it was once more common in Wales, it has maintained a steady but modest presence in the United States. With 1 in every 106,755 newborns receiving the name in the latest recorded year, Llewellyn remains a distinguished choice for those seeking a name with Celtic heritage and a strong, noble meaning.

Llewellyn is a traditional Welsh name derived from the elements 'llyw' (leader) and 'eilin' (resembling), though it is popularly interpreted as 'lion-like' due to association with 'llew' (lion). A classic name in Wales for centuries, it was borne by several Welsh princes and chieftains.

Nicknames & variants

Nicknames: Lleu, Elen, Welly

Variants: Llywelyn, Llewelyn, Lewellyn, Fluellyn

Sibling names for Llewellyn

Names that share Llewellyn's style, for a brother or sister.

A parent animal hugging its little one, the personalized name page

L is for Llewellyn, our favorite little person.

L is for Llewellyn…”

In a Mallowby alphabet book, Llewellyn's letter becomes Llewellyn's page: hand-illustrated, printed hardcover or paperback, made just for them.

Make Llewellyn's book

Books for siblings or grandkids? The second book is 15% off.

Questions parents ask

What does the name Llewellyn mean?
Llewellyn is a Welsh name that traditionally means 'like a lion' or 'lion-like,' from the Welsh word 'llew' (lion).
How popular is Llewellyn today?
As of the latest data for 2025, Llewellyn ranked 5,608 in the U.S., with about 1 in 106,755 newborns given the name.
Is Llewellyn a boy or girl name?
Llewellyn is primarily used as a masculine name in Wales, but in the U.S. it has been used for all genders, though it remains more common for boys.