Cathlyn
given name · Latin script
Recorded as a female name· opposite-gender records fall within measured source noise
/kæθɫɪn/(machine-generated) pronunciation, model-generated
Cathlyn is a given name written in the Latin script, with more bearers in the United States than in any other country.
- NLNetherlands1 in 508K(measured from records)
- EEEstonia≈1 in 705K
- USUnited States1 in 705K
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
- 28 (measured from records)
- 1 in 508K (inferred from the name graph)
472 people, 2020
Reference-verified
Netherlands
measured from records inferred from the name graph
Meaning & origin
No verified etymology recorded for this name yet — the entries below are drawn from usage statistics and the name graph.
Where in the world(measured from records)
Cathlyn 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 | 472 | 1 in 705K | 468 | Cathlyn | 4 |
| NL Netherlands | 34 | 1 in 508K | 34 | — | — |
| EE Estonia | ≈2 est. | ≈1 in 705K | 8 | — | — |
| CR Costa Rica | 2 | 1 in 2.5M | 2 | — | — |
| GY Guyana | 1 | 1 in 750K | 1 | — | — |
472 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; Meertens NVB — Nederlandse Voornamenbank (all-time BRP bearer counts, 2018); Statistics Estonia — per-name Population Register counts (nimed); TSE — electoral roll (padrón) names; Guyana — Official List of Electors July 2025. 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).
How to address them(machine-generated)
A formal English salutation is built on the surname, so it needs a full name — on its own, a first name only supports the informal form.
Evidence(measured from records)
Attested in 13 sources across 10 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| US United States | Census Bureau — First Name Frequency 2020 by sex | 2020 | 468 | #21,475 |
| NL Netherlands | Meertens NVB — Nederlandse Voornamenbank (all-time BRP bearer counts, 2018) | — | 34 | #10,674 |
| NL Netherlands | Meertens NVB — Nederlandse Voornamenbank (live per-name BRP counts, 1790-2017) | — | 19 | #20,122 |
| US United States | SSA — National Baby Names (1880–present) | 1953 | 18 | — |
| US United States | SSA — National Baby Names (1880–present) | 1947 | 13 | — |
| US United States | SSA — National Baby Names (1880–present) | 2024 | 12 | — |
| US United States | SSA — National Baby Names (1880–present) | 1961 | 12 | — |
| US United States | SSA — National Baby Names (1880–present) | 1959 | 12 | — |
| US United States | SSA — National Baby Names (1880–present) | 1956 | 12 | — |
| US United States | SSA — National Baby Names (1880–present) | 1955 | 12 | — |
| US United States | SSA — National Baby Names (1880–present) | 1954 | 12 | — |
| US United States | SSA — National Baby Names (1880–present) | 1951 | 12 | — |
Register rows as of the 2026-10-09 data build.
Frequently asked questions
- How do you pronounce Cathlyn?
- A machine transcription gives /kæθɫɪn/ (IPA) for English.
- Is Cathlyn a male or female name?
- Cathlyn 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.
- In which country does Cathlyn have the most bearers?
- In the United States, the national register counted about 472 people named Cathlyn, more than in any other country we hold, where it is most often spelled cathlyn.
- Where is Cathlyn most common?
- Measured as a share of residents rather than as a count, Cathlyn is densest in the Netherlands — about 1 in 508 thousand people — even though United States holds more of our records for it.
- How common is the name Cathlyn?
- In the United States, the national register counted 472 people named Cathlyn in 2020, about 1 in 705 thousand residents.
What do you want to know about Cathlyn?
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/cathlynThe 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, “Cathlyn”. Data snapshot 2026-10-10.