Caitlyn
given name · Latin script
Meaning: A female given name from Irish, one of the modern spelling variants of Caitlin
Recorded as a female name· opposite-gender records fall within measured source noise
Caitlyn is a given name written in the Latin script, with more bearers in the United States than in any other country.
- USUnited States1 in 6.9K(measured from records)
- AUAustralia≈1 in 7.5K
- CACanada≈1 in 35K
carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). One hue, darker where it is more common; hover a country for its figure.
- United States (measured from records)
- Sources
- 444 (measured from records)
- 1 in 6.9K (inferred from the name graph)
48,237 people, 2020
Highest-authority source
United States
measured from records inferred from the name graph
Meaning & origin(measured from records)
A female given name from Irish, one of the modern spelling variants of Caitlin.
Sources 1
- kaikki.org Wiktionary extract (IPA + transliterations)
Attested across 10 languages in the etymology graph.
Where in the world(measured from records)
Caitlyn counted together with the spellings and other-language forms grouped with it. Where a register counted another spelling, the row names it.
Sorted by bearers: national registers' counts, and Mondonomo's estimates (≈, est.) where no register counts.
| Country | Most common spelling | Sources | ||||
|---|---|---|---|---|---|---|
| US United States | — | 48,237 | 1 in 6.9K | 48K | Caitlyn | 444 |
| AU Australia | #760 | ≈3,400 est. | ≈1 in 7.5K | 81 | Caitlyn | 167 |
| GB United Kingdom | — | ≈1,200 est. | ≈1 in 54K | 10 | Caitlyn | 134 |
| CA Canada | — | ≈1,100 est. | ≈1 in 35K | 2 | Caitlyn | 161 |
| BD Bangladesh | — | ≈620 est. | ≈1 in 261K | — | Caitlyn | 2 |
| NL Netherlands | — | 589 | 1 in 29K | 589 | Caitlyn | 31 |
| NZ New Zealand | — | ≈98 est. | ≈1 in 50K | 12 | Caitlyn | 53 |
48,237 people counted by Census Bureau — First Name Frequency 2020 by sex, 2020. Exact figures are national registers' own counts, while figures marked ≈ and est. are Mondonomo’s estimates, counted from our sources and calibrated against those registers; hover one for how far to trust it in that country. A dash means neither exists.
Registers cited: Census Bureau — First Name Frequency 2020 by sex; NSW BDM — Popular baby names (1952–present); NRS — Baby names Scotland full list (1974–present); Alberta Open Government — Frequency and Ranking of Baby Names by Year and Gender; Meertens NVB — Nederlandse Voornamenbank (all-time BRP bearer counts, 2018); DIA — Baby name popularity (1900–present). Figures without a register are Mondonomo estimates; see Methodology.
Country figures for a list of names, at full precision, are available under licence rather than by scraping this table (how that works).
Other recorded senses(measured from records)
Caitlyn is also recorded in one other lexicon, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.
In English, Variant of Caitlin; from Catherine.
as a nameBaby names, 25,350 baby names nicknames for your family, friends pets, including the top 100 names, 2,000 most popular…
Ordered by how much of this spelling's record each language holds, so a sense from a language the name is barely used in sits last rather than first.
Notable people with this name(measured from records)
- Caitlyn Jennerb. 1949USAmerican media personality and retired decathlete
- Caitlyn Bairstowb. 1984CACanadian actress and voice actor
- Caitlyn Smithb. 1986USAmerican singer-songwriter
- Caitlyn Folleyb. 1987USAmerican actress
- Ariel Ekblawb. 1992USnot in their usual nameAmerican astronautical engineer
- Caitlyn Taylor Loveb. 1994USAmerican actress and singer
- Caitlyn Shadboltb. 1995AUAustralian singer
- Caitlyn Hermansb. 2004NLDutch association football player
- Caitlyn Coxb. 2005USAmerican taekwondo athlete
- Caitlyn ElizabethUSAmerican voice actress
The ten people covered by the most Wikipedia language editions — a proxy for cross-cultural notability, which favours historical and Western figures over equally prominent contemporary ones — shown by birth year. Source: Wikidata (CC0).
Evidence(measured from records)
Attested in 49 sources across 29 countries.
Reference works 2
- Wikipedia given-name tokens
- Wikidata name items (native-script + romanized given/family names)
These works list the name; their figures are licensed and are not reproduced here.
Register rows as of the 2026-10-09 data build.
Frequently asked questions
- Is Caitlyn a male or female name?
- Caitlyn is a female name in our records. Opposite-gender entries fall within the cross-gender noise we measure in the source data, so we don't report them as usage.
- What are other forms of the name Caitlyn?
- In the etymology graph, Kathleen, Catherine and Katherine are forms of the same name in other languages.
- What does the name Caitlyn mean, and where does it come from?
- A female given name from Irish, one of the modern spelling variants of Caitlin. Recorded by kaikki.org Wiktionary extract (IPA + transliterations).
- In which country does Caitlyn have the most bearers?
- In the United States, the national register counted about 48 thousand people named Caitlyn, more than in any other country we hold, where it is most often spelled caitlyn.
- Where is Caitlyn most common?
- Caitlyn is densest in the United States, where the national register counts about 1 in 6.9 thousand people carrying it.
- How common is the name Caitlyn?
- In the United States, the national register counted 48,237 people named Caitlyn in 2020, about 1 in 6.9 thousand residents.
- How common is Caitlyn compared with other names?
- In Australia, Caitlyn is the 760th most common given name of 205,854 given names recorded there.
What do you want to know about Caitlyn?
Nobody replies to these one by one, but what readers ask decides what these pages answer next.
Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/caitlynThe payload this page is built from: spellings and scripts, countries and languages, related names, and the registers that attest the form. It takes a free API key (1,000 requests a day), which returns what this page shows everyone; the full country table, every register citation and the year-by-year series come with a licensed key, as does bulk access.
About this data
measured from records inferred from the name graph machine-generated
These figures come from the data snapshot of and will change as it is rebuilt.
Statistics are aggregated from the Mondonomo name corpus; related names and etymology are inferred from the name graph; pronunciation and any machine-marked transliterations are model-generated. Read how the numbers are made, including their known failure modes, and where the data comes from.
Reference works we consult — surname dictionaries, official name registers, Wikidata and Wiktionary — are named directly, beside the claims they support. The per-country source counts also include datasets of person records: we publish how many there are and their authority tier, but not their names.
Cite this page Mondonomo, “Caitlyn” — the 760th most common given name in Australia. Data snapshot 2026-10-10.