Wącek

surname · Latin script

Wącek is a surname written in the Latin script, with more bearers in Poland than in any other country. Recorded meaning: Back-formation from Wacław + -ek.

rarermore common
  • PLPoland1 in 99K(measured from records)
  • USUnited States1 in 1.2M
  • CZCzechia1 in 1.3M

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.

Poland (measured from records)

388 people, 2026

Sources
28 (measured from records)

Highest-authority source

1 in 99K (inferred from the name graph)

Poland

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 Wacek in US United States, PL Poland.

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)

Back-formation from Wacław + -ek.

Sources 1

Attested across 10 languages in the etymology graph.

Where in the world(measured from records)

Wącek 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 Wącek is recorded, by country
CountryMost common spellingSources
PL Poland3881 in 99K203Wacek28
US United States2821 in 1.2M297Wacek20
CZ Czechia81 in 1.3M8——
CH Switzerland41 in 2.1M4—4
BE Belgium21 in 5.9M2—1

388 people counted by dane.gov.pl — PESEL living persons (surnames), 2026. 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; Census Bureau — Surname Frequency 2020; dane.gov.pl — PESEL living persons (surnames); MVČR — living population register 2017; BFS — Familiennamen der Wohnbevölkerung (surnames); Familienaam.be — Belgian family-name frequency (population register). 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)

Wącek is also recorded as another name, grouped separately because the records behind them do not connect to the one described above.

  • English surname4 spellings in the group

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

    Languages: English, German

    Also written Wacek

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.

Evidence(measured from records)

Attested in 3 sources across 1 country.

Official registers attesting Wącek
CountryRegisterYearCountRank
PL Polanddane.gov.pl — PESEL living persons (surnames)202622—
PL Polanddane.gov.pl — PESEL living persons (names)—22#86,055
PL Polanddane.gov.pl — PESEL living persons (surnames)202620—
PL Polanddane.gov.pl — PESEL living persons (names)—20#91,181

Reference works 1

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 Wącek mean, and where does it come from?
Back-formation from Wacław + -ek. Recorded by Wiktionary.
In which country does Wącek have the most bearers?
In Poland, the national register counted about 388 people named Wącek, more than in any other country we hold, where it is most often spelled wacek.
Where is Wącek most common?
Wącek is densest in Poland, where the national register counts about 1 in 99 thousand people carrying it.
How common is the name Wącek?
In Poland, the national register counted 388 people named Wącek in 2026, about 1 in 99 thousand residents.

What do you want to know about Wącek?

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Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/w%C4%85cek

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, “Wącek”. Data snapshot 2026-10-10.

See how Wącek parses inside a full name →