Klár

surname · Latin script

(measured from records)Officially recorded in 2 countries · latest register: dane.gov.pl, 2026

Klár is a surname written in the Latin script, with more bearers in the United States than in any other country. Recorded meaning: * As a German and Jewish surname, from klar (“pure, clear”). Also from Klara, German variant of Clara. * Also as a German surname, from a derivative of Latin Hilarius (English Hillary).

rarermore common
  • SESweden1 in 25K(measured from records)
  • SISlovenia1 in 46K
  • FIFinland1 in 47K

carrying the name, as counted by each country's national register. One hue, darker where it is more common; hover a country for its figure.

United States (measured from records)

1,641 people, 2010

Record sources
32 (measured from records)

corpus datasets behind its best-documented spelling

strongest: highest-authority source

1 in 25K (inferred from the name graph)

Sweden

measured from records inferred from the name graph

Name dossier (print, CSV)

Spellings & scripts

(measured from records)

One other spelling is counted as the same name:

Locally spelled Klar in US United States, PL Poland, CZ Czechia.

Spellings marked ● are how people bearing the name write it in our records, and ○ marks a model's transliteration; click a spelling to open its page.

Meaning & origin

(measured from records)

* As a German and Jewish surname, from klar (“pure, clear”). Also from Klara, German variant of Clara. * Also as a German surname, from a derivative of Latin Hilarius (English Hillary).

Cited for this meaning 2

Attested across 15 languages in the etymology graph.

Where in the world

(measured from records)

Klár 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.

Where Klár is recorded, by country
CountryMost common spellingSources
US United States1,6411 in 203K1.6KKlar12
PL Poland4771 in 80K253Klar32
SE Sweden4121 in 25K412—4
CZ Czechia1321 in 81K132Klar22
FI Finland1181 in 47K118——
SI Slovenia461 in 46K46——

1,641 people counted by Census Bureau — Surname Frequency 2010, 2010. 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 — Surname Frequency 2010; Skatteverket — Sök hur många som har ett visst namn (living population); dane.gov.pl — PESEL living persons (surnames); MVČR — living population register 2017; DVV — Nimipalvelu (Finnish name service, per-name lookup); stat.si Imena rojstva — full name register (per-token frequency + rank). 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 names spelled this way

(inferred from the name graph)

Klár is also recorded as 4 other names, grouped separately because the records behind them do not connect to the one described above.

  • Hungarian surname2 spellings in the group

    Most recorded in Hungary, United States

    Also written Klar

  • English surname18 spellings in the group

    Most recorded in United States, Germany, United Kingdom, Australia

    Languages: English, German, Norwegian

    Also written Klar, Klaer, Klär, Kläer, Klãr

  • Croatian surname9 spellings in the group

    Most recorded in Croatia, United States, Slovenia, Serbia

    Languages: Croatian, Slovenian, Bulgarian

    Also written Klar, Klär, Клар

  • a separate name3 spellings in the group

    Also written Klar, Klär

Grouping is the name graph's, not a register's: two spellings join a group when the evidence links them, so a group is a claim about the records rather than about the people.

Other recorded senses

(measured from records)

Klár 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 Icelandic, clever, sharp bright, certain, knowledgeable

    as a wordkaikki.org Wiktionary extract (IPA + transliterations)

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)

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)

4 registers and reference works attest this spelling, across 2 countries.

Official registers attesting Klár
CountryRegisterYearCountRank
CZ CzechiaMVČR — living population register 2017—132#12,842
PL Polanddane.gov.pl — PESEL living persons (surnames)20262—
PL Polanddane.gov.pl — PESEL living persons (names)—2#346,122

Reference works 1

  • 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

What does the name Klár mean, and where does it come from?
* As a German and Jewish surname, from klar (“pure, clear”). Also from Klara, German variant of Clara. * Also as a German surname, from a derivative of Latin Hilarius (English Hillary). Recorded by Dictionary of American Family Names and Wiktionary.
In which country does Klár have the most bearers?
In the United States, the national register counted about 1.6 thousand people named Klár, more than in any other country we hold, where it is most often spelled klar.
Where is Klár most common?
Measured as a share of residents rather than as a count, Klár is densest in Sweden — about 1 in 25 thousand people — even though United States holds more of our records for it.
How common is the name Klár?
In the United States, the national register counted 1,641 people named Klár in 2010, about 1 in 203 thousand residents.

What do you want to know about Klár?

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Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/kl%C3%A1r

The 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, “Klár”. Data snapshot 2026-10-13.

See how Klár parses inside a full name →