Klein

surname · Latin script

Meaning, in English: From a medieval nickname for a small man, from German/Dutch klein and Yiddish kleyn ‘small’

(measured from records)Officially recorded in 36 countries · latest register: Census Bureau, 2020

/klaɪn/(machine-generated) pronunciation, model-generated

Klein is a surname written in the Latin script, with more bearers in Germany than in any other country, where it is the 16th most common surname.

rarermore common
  • DEGermany≈1 in 653(inferred from the name graph)
  • ATAustria≈1 in 1.8K
  • HUHungary≈1 in 2K

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.

Germany (inferred from the name graph)

≈120,000 people, est.

#644 (measured from records)

of 19M surnames, spellings grouped

4 (measured from records)

recorded for this name

Record sources
546 (measured from records)

corpus datasets behind its best-documented spelling

strongest: highest-authority source

≈1 in 653 (inferred from the name graph)

Germany, est.

measured from records inferred from the name graph

Spellings & scripts

(measured from records)
KleinLatin(measured from records)
ไคล์นThai(measured from records)
클라인Hangul(measured from records)
კლეინGeorgian(measured from records)

One other spelling is counted as the same name:

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)

From a medieval nickname for a small man, from German/Dutch klein and Yiddish kleyn ‘small’.

Cited for this meaning 1

  • Encyclopedia of surnames [the complete companion to tracing your names history]

Attested across 5 languages in the etymology graph.

How Klein is read

(measured from records)

Klein is one spelling over 3 language communities, and the dictionaries record it differently in 2 of them. Each row is what a source recorded for that language, beside the share of this name’s records the language holds. No single row is the name’s meaning.

  • English62%

    From a medieval nickname for a small man, from German/Dutch klein and Yiddish kleyn ‘small’.

    as a nameEncyclopedia of surnames [the complete companion to tracing your names history]

  • German15%

    German surname from a personal characteristic: 'small/short'; nickname for a small-statured person.

    as a nameDeutscher Familiennamenatlas, Band 5: Familiennamen nach Beruf und persönlichen Merkmalen

    from klein 'small'; also used in compounds and as a descriptive byname

    as a nameDeutsche Namenkunde: Unsere Familiennamen nach ihrer Entstehung und Bedeutung

    from klein ‘small, young’; also from short forms of given names

    as a nameDeutsche Namenkunde: Unsere Familiennamen nach ihrer Entstehung und Bedeutung

    Personal characteristic: 'small/short'; bearer count 63785.

    as a nameDeutscher Familiennamenatlas, Band 5: Familiennamen nach Beruf und persönlichen Merkmalen

    distinguishing byname from Klein- 'younger, smaller'

    as a nameDeutsche Namenkunde: Unsere Familiennamen nach ihrer Entstehung und Bedeutung

  • French6.1%

    No dictionary in our sources glosses Klein in French.

The share is ours — how much of this name’s records each language holds. The sense beside it is the source’s, quoted and credited, including where it names a gender. We do not publish a gender of our own per language: our records carry one figure for the spelling as a whole.

Often considered alongside

Names that people choosing a name often weigh against Klein, most often first. They share a style rather than an origin.

From the names suggested together in public name-advice forums, in English. A list of what people consider, not a measure of how common any name is.

Where in the world

(measured from records)

Klein 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 Klein is recorded, by country
CountryMost common spellingSources
DE Germany#16≈120,000 est.≈1 in 653listedKlein283
US United States#20581,4711 in 4.1K81KKlein546
BR Brazil—27,0541 in 7.8K27K—6
FR France—≈20,000 est.≈1 in 3.3K2.4K—9
GB United Kingdom#389≈11,000 est.≈1 in 6.1KlistedKlein195
NL Netherlands#467,9321 in 2.2K7.9KKlein134
AT Austria#62≈4,900 est.≈1 in 1.8K—Klein118
HU Hungary#185≈4,800 est.≈1 in 2K—Klein81
LU Luxembourg#952≈810 est.≈1 in 7802.4KKlein38

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; the hanks-dictionary-surnames-1988 register; IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname); CBG Familienamenbank — Dutch surname bearer counts (GBA/BRP 2007); Luxembourg top-100 surnames (surnam.es); INSEE — Fichier des noms de famille (1891–2000). 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)

Klein is also recorded as 5 other names, grouped separately because the records behind them do not connect to the one described above.

  • Portuguese surname5 spellings in the group

    Most recorded in Brazil, United States, Netherlands, United Kingdom

    Also written Klëin, Kleĭn, ̶k̶l̶e̶i̶n̶

  • Spanish surname2 spellings in the group

    Most recorded in United States, Argentina, Chile, Colombia

    Also written K'Lein

  • Russian surname59 spellings in the group

    Most recorded in Russia, Kazakhstan, Ukraine, United States

    Languages: Russian, Ukrainian, Polish

    Also written Клейн, Кляйн, Кляин, Клеин, Клайн

  • a separate name4 spellings in the group

    Also written Ḳlein, Kleĭn

  • Hebrew surname18 spellings in the group

    Most recorded in Israel, United States, Romania, Hungary

    Languages: Hebrew, Amharic

    Also written קליין, קלין, Kline, Klain, Cline

86 further groups record this spelling and are not listed here.

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.

Notable people with this name

(measured from records)
18001850190019502000Felix Klein, b. 1849Melanie Klein, b. 1882Lawrence Klein, b. 1920Yves Klein, b. 1928Calvin Klein, b. 1942Carole King, b. 1942Naomi Klein, b. 1970Chris Klein, b. 1979Ezra Klein, b. 1984Joost Klein, b. 1997
  • Felix Kleinb. 1849DEGerman mathematician, author of the Erlangen Program (1849-1925)
  • Melanie Kleinb. 1882GBBritish Austrian born psychoanalyst (1882–1960)
  • Lawrence Kleinb. 1920USAmerican economist (1920-2013)
  • Yves Kleinb. 1928FR20th century French visual artist (1928–1962)
  • Calvin Kleinb. 1942USAmerican fashion designer (born 1942)
  • Carole Kingb. 1942USnot in their usual nameAmerican singer-songwriter and musician (born 1942)
  • Naomi Kleinb. 1970CACanadian author and activist (born 1970)
  • Chris Kleinb. 1979USAmerican actor
  • Ezra Kleinb. 1984USAmerican journalist (born 1984)
  • Joost Kleinb. 1997NLDutch musician and videographer (born 1997)

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).

How to address them

(machine-generated)
FormalDear Klein,
InformalHello,

Evidence

(measured from records)

63 registers and reference works attest this spelling, across 36 countries.

Official registers attesting Klein
CountryRegisterYearCountRank
US United StatesCensus Bureau — Surname Frequency 2010201081K#392
US United StatesCensus Bureau — Surname Frequency 2000200080K#359
US United StatesCensus Bureau — Surname Frequency 2020202080K#398
BR BrazilIBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname)—27K#654
NL NetherlandsCBG Familienamenbank — Dutch surname bearer counts (GBA/BRP 2007)20077.9K#77
LU LuxembourgLuxembourg top-100 surnames (surnam.es)—2.4K#10
FR FranceINSEE — Fichier des noms de famille (1891–2000)19912.4K—
GB United KingdomA Dictionary of Surnames (Hanks & Hodges, 1988)———

Reference works 8

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 Klein mean, and where does it come from?
From a medieval nickname for a small man, from German/Dutch klein and Yiddish kleyn ‘small’. Recorded by Encyclopedia of surnames [the complete companion to tracing your names history].
How do you pronounce Klein?
A machine transcription gives /klaɪn/ (IPA) for English.
In which country does Klein have the most bearers?
Mondonomo estimates about 123 thousand people named Klein in Germany, more than in any other country we hold, where it is most often spelled klein.
How common is the name Klein?
In the United States, the national register counted 81,471 people named Klein in 2010, about 1 in 4.1 thousand residents.
How common is Klein compared with other names?
In Germany, Klein is the 16th most common surname of 765,306 surnames recorded there.

What do you want to know about Klein?

Nobody replies to these one by one, but what readers ask decides what these pages answer next.

Please leave out anyone's personal details (see Privacy).

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

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, “Klein” — the 16th most common surname in Germany. Data snapshot 2026-10-13.

See how Klein parses inside a full name →