Wilczak
surname · Latin script
Recorded for both men and women· direction only, no split published
Wilczak is a surname written in the Latin script, with more bearers in Poland than in any other country. Recorded meaning: From wilk + -ak.
- PLPoland1 in 12K(measured from records)
- NONorway1 in 144K
- USUnited States1 in 694K
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)
- Sources
- 4 (measured from records)
- 1 in 12K (inferred from the name graph)
3,083 people, 2026
Reference-verified
Poland
measured from records inferred from the name graph
Spellings & scripts(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 wilk + -ak.
Sources 1
Attested in 1 language in the etymology graph.
Where in the world(measured from records)
Wilczak 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 | |||
|---|---|---|---|---|---|
| PL Poland | 3,083 | 1 in 12K | 1.6K | — | — |
| US United States | 479 | 1 in 694K | 479 | Wilczak | 4 |
| BR Brazil | 159 | 1 in 1.3M | 159 | — | — |
| NO Norway | 38 | 1 in 144K | 38 | — | — |
| BE Belgium | 14 | 1 in 837K | 14 | — | — |
| CH Switzerland | 8 | 1 in 1.1M | 8 | — | — |
3,083 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: dane.gov.pl — PESEL living persons (surnames); Census Bureau — Surname Frequency 2010; IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname); SSB — Navnesøk (name-search service, living population); Familienaam.be — Belgian family-name frequency (population register); 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).
Notable people with this name(measured from records)
- Jan Wilczakb. 1898PLMajor of the Polish Army
- Bronisław Wilczakb. 1928PLPolish colonel, diplomat (1928-1999)
- Dariusz Wilczakb. 1961PLPolish journalist
- Paweł Wilczakb. 1965PLPolish actor
- Kacper Wilczakb. 1991PLPolish sportsperson
- Daniel Wilczakb. 2000PLPolish mathematician
- Jacek WilczakPLresearcher
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 18 sources across 10 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| PL Poland | dane.gov.pl — PESEL living persons (surnames) | 2026 | 1.6K | — |
| PL Poland | dane.gov.pl — PESEL living persons (names) | — | 1.6K | #1,813 |
| PL Poland | dane.gov.pl — PESEL living persons (surnames) | 2026 | 1.5K | — |
| PL Poland | dane.gov.pl — PESEL living persons (names) | — | 1.5K | #1,901 |
| US United States | Census Bureau — Surname Frequency 2010 | 2010 | 479 | #44,808 |
| US United States | Census Bureau — Surname Frequency 2000 | 2000 | 458 | #44,273 |
| US United States | Census Bureau — Surname Frequency 2020 | 2020 | 450 | #50,251 |
| BR Brazil | IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname) | — | 159 | #44,251 |
| NO Norway | SSB — Navnesøk (name-search service, living population) | — | 38 | #31,010 |
| BE Belgium | Familienaam.be — Belgian family-name frequency (population register) | 2008 | 14 | #59,511 |
| CH Switzerland | BFS — Familiennamen der Wohnbevölkerung (surnames) | 2024 | 8 | #72,019 |
| US United States | wru Name Dictionary — US surnames, Census 2010 subset (Khanna et al.) | — | — | — |
Reference works 4
- Wikipedia surname tokens
- Wikidata name items (native-script + romanized given/family names)
- Rymut, Słownik nazwisk współcześnie w Polsce używanych (10 vols, IJP PAN, Kraków 1992–1994) — every Polish surname in the PESEL register at the end of 1990, with bearer counts nationally and per voivodeship1990
- Hoffman, Polish Surnames: Origins and Meanings (2nd ed., 2012)
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 Wilczak mean, and where does it come from?
- From wilk + -ak. Recorded by Wiktionary.
- In which country does Wilczak have the most bearers?
- In Poland, the national register counted about 3.1 thousand people named Wilczak, more than in any other country we hold.
- Where is Wilczak most common?
- Wilczak is densest in Poland, where the national register counts about 1 in 12 thousand people carrying it.
- How common is the name Wilczak?
- In Poland, the national register counted 3,083 people named Wilczak in 2026, about 1 in 12 thousand residents.
What do you want to know about Wilczak?
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/wilczakThe 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, “Wilczak”. Data snapshot 2026-10-10.