Girl Name · Irish Origin
Caitlyn
Considering Caitlyn? It is a girl name whose meaning is "Pure", rooted in Irish naming tradition, and ranks in our Rare popularity tier. Phonetically it shares territory with Caitlin.
Caitlyn meaning, origin, and usage
Meaning: Pure
Origin: Irish naming roots help connect Caitlyn to related Irish baby names.
Pronunciation: Baby Name Studio pronounces Caitlyn as C·A·I·T·L·Y·N, with 7 letters and a girl usage profile.
Popularity: According to Baby Name Studio's 2026 tracker, Caitlyn is an uncommon, standout choice in the Rare tier.
Caitlyn variants, nicknames, middle names, and sibling names
- Variants and spelling ideas: Caitlyna, Caitlyne, Caitlyny, Caitly.
- Nicknames: Cait and C.
- Middle names: Pair Caitlyn with a middle name that balances its substantial sound; start with the Caitlyn middle name generator.
- Sibling names: Caitlin, Cathleen, Cathlene, Catalina, Catlin — full picks on the sibling names for Caitlyn guide for a cohesive sibset.
- Similar names: Looking for names that sound like Caitlyn? Browse our names like Caitlyn 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 Caitlyn
What does the name Caitlyn mean?
Caitlyn means "Pure" and is of Irish origin.
What is the origin of Caitlyn?
Caitlyn originates in Irish naming tradition.
How do you pronounce Caitlyn?
Caitlyn has 7 letters and is most commonly stressed on the first syllable.
Is Caitlyn a boy's or girl's name?
Caitlyn is primarily used as a girl's name in US records.
How popular is Caitlyn in 2026?
In our 2026 popularity tracker, Caitlyn sits in the Rare tier — an uncommon, standout choice.
What names are similar to Caitlyn?
Names that share Caitlyn's sound and style include Caitlin, Cathleen, Cathlene, Catalina, Catlin.
What middle names pair well with Caitlyn?
Good middle-name fits for Caitlyn pair an opposite syllable rhythm: if Caitlyn is short, lean longer (e.g. classical or three-syllable middles); if Caitlyn is longer, a one-syllable middle keeps the full name from feeling heavy.
What are good sibling names for Caitlyn?
Sibling names that pair naturally with Caitlyn share its rhythm without rhyming — Caitlin, Cathleen, Cathlene all sit comfortably alongside it on a shortlist.