Boy Name · Welsh Origin
Llewellyn
Llewellyn is a boy's name whose meaning is not firmly attested in the historical record. It is a boy's name of Welsh origin, and it is rare in the United States today — outside the SSA top 1,000.
Origin and meaning: English Wiktionary (CC BY-SA 4.0). Popularity: US Social Security Administration.
Llewellyn — a boy name from the Welsh tradition — is an uncommon, standout choice. If Lillian is on your shortlist, Llewellyn belongs in the same conversation.
Llewellyn meaning, origin, and usage
Meaning: Llewellyn has a distinctive sound and evolving modern usage.
Origin: Welsh naming roots help connect Llewellyn to related Welsh baby names.
Pronunciation: Baby Name Studio pronounces Llewellyn as L·L·E·W·E·L·L·Y·N, with 9 letters and a boy usage profile.
Popularity: According to Baby Name Studio's 2026 tracker, Llewellyn is an uncommon, standout choice in the Rare tier.
Llewellyn variants, nicknames, middle names, and sibling names
- Variants and spelling ideas: Llewellyna, Llewellyne, Llewellyny, Llewelly.
- Nicknames: Llewe and L.
- Middle names: Pair Llewellyn with a middle name that balances its substantial sound; start with the Llewellyn middle name generator.
- Sibling names: Lillian, Lilianna, Lilliana, Lelon, Lelan — full picks on the sibling names for Llewellyn guide for a cohesive sibset.
- Similar names: Looking for names that sound like Llewellyn? Browse our names like Llewellyn guide for phonetic-neighbor picks.
- Explore more: use the Baby Name Explorer, name search, AI name generator, and Baby Name Studio homepage.
Frequently asked about Llewellyn
What does the name Llewellyn mean?
Llewellyn has no single meaning that is firmly attested in the historical record. It is used as a boy name in US birth records, and parents usually choose it for its sound rather than a documented meaning.
What is the origin of Llewellyn?
Llewellyn originates in Welsh naming tradition.
How do you pronounce Llewellyn?
Llewellyn has 9 letters and is most commonly stressed on the first syllable.
Is Llewellyn a boy's or girl's name?
Llewellyn is primarily used as a boy's name in US records.
How popular is Llewellyn in 2026?
In our 2026 popularity tracker, Llewellyn sits in the Rare tier — an uncommon, standout choice.
What names are similar to Llewellyn?
Names that share Llewellyn's sound and style include Lillian, Lilianna, Lilliana, Lelon, Lelan.
What middle names pair well with Llewellyn?
Good middle-name fits for Llewellyn pair an opposite syllable rhythm: if Llewellyn is short, lean longer (e.g. classical or three-syllable middles); if Llewellyn is longer, a one-syllable middle keeps the full name from feeling heavy.
What are good sibling names for Llewellyn?
Sibling names that pair naturally with Llewellyn share its rhythm without rhyming — Lillian, Lilianna, Lilliana all sit comfortably alongside it on a shortlist.