Janeček

surname · Latin script

Recorded for both men and women· direction only, no split published

Janeček is a surname written in the Latin script, most frequently recorded in Czechia. Recorded meaning: from Janek, a pet form of the personal name Jan, a vernacular form of Greek lohannes (see John).

Name dossier (print, CSV)

Spellings & scripts(measured from records)

2 other spellings are 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 Janek, a pet form of the personal name Jan, a vernacular form of Greek lohannes (see John).

Sources 1

  • Dictionary of American Family Names

Attested across 13 languages in the etymology graph.

Where in the world(measured from records)

Janeček counted together with the spellings and other-language forms grouped with it. Where a register counted another spelling, the row names it.

Where Janeček is recorded, by country
CountryMost common spelling
CZ Czechia—3.9K—
US United States—1.2K—
SK Slovakia—498—
HR Croatia—20—
CH Switzerland—7—

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: naše jména — 2016 MVČR snapshot; Census Bureau — Surname Frequency 2020; JÚĽŠ SAV — Databáza priezvisk na Slovensku (surname database, 1995 census); DZS — Imena i prezimena (per-token lookup form); BFS — Familiennamen der Wohnbevölkerung (surnames). 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)

Janeček is also recorded as 3 other names, grouped separately because the records behind them do not connect to the one described above.

  • English surname12 spellings in the group

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

    Languages: English, Czech, German

    Also written Janecek

  • French surname3 spellings in the group

    Most recorded in France, United States, Canada

    Also written Janecek

  • a separate name2 spellings in the group

    Also written Janecek

12 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)

18001850190019502000Gustav Janeček, b. 1848František Janeček, b. 1878Karel Janeček, b. 1903Ota Janeček, b. 1919Miloš Janeček, b. 1950Josef Janeček, b. 1952Vít Janeček, b. 1970Karel Janeček, b. 1973Smack One, b. 1986Pavel Janeček, b. 1994

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 11 sources across 5 countries.

Official registers attesting Janeček
CountryRegisterYearCountRank
CZ Czechianaše jména — 2016 MVČR snapshot—3.9K#217
CZ CzechiaKdeJsme.cz — četnost jmen a příjmení (MVČR population register front-end)—3.9K#217
CZ CzechiaMVČR — living population register 2017—3.9K#218
SK SlovakiaJÚĽŠ SAV — Databáza priezvisk na Slovensku (surname database, 1995 census)1995498—
HR CroatiaDZS — Imena i prezimena (per-token lookup form)202120#23,263
HR CroatiaDZS — Učestalost prezimena (Popis 2021)202119—

Reference works 2

  • Wikipedia surname 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

What does the name Janeček mean, and where does it come from?
from Janek, a pet form of the personal name Jan, a vernacular form of Greek lohannes (see John). Recorded by Dictionary of American Family Names.
In which country does Janeček have the most bearers?
Janeček is most frequently recorded in Czechia.

What do you want to know about Janeček?

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Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/jane%C4%8Dek

The same 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), and bulk access is licensed separately.

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, “Janeček”. Data snapshot 2026-10-10.

See how Janeček parses inside a full name →