Nikolau
surname · Latin script
(measured from records)Officially recorded in 7 countries
/nɪkəɫaʊ/(machine-generated) pronunciation, model-generated
Nikolau is a surname written in the Latin script, with more bearers in Spain than in any other country.
- RURussia≈1 in 523Kas Николау(inferred from the name graph)
- BRBrazil1 in 4.5M
- ESSpain1 in 13Kas Nicolau
carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). Where a country counts another spelling of the name rather than Nikolau itself, the figure is that spelling’s, and it is named. One hue, darker where it is more common; hover a country for its figure.
- Spain (measured from records)
- 2 (measured from records)
- Record sources
- 83 (measured from records)
- 1 in 4.5M (inferred from the name graph)
3,749 named Nicolau
recorded for this name
corpus datasets behind its best-documented spelling
strongest: highest-authority source
Brazil
measured from records inferred from the name graph
Spellings & scripts
(measured from records)Locally spelled Nicolau in ES Spain, Николау in RU Russia and Ніколау in UA Ukraine.
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
No verified etymology recorded for this name yet — the entries below are drawn from usage statistics and the name graph.
Where in the world
(measured from records)Nikolau 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 | |||
|---|---|---|---|---|---|
| ES Spain | 3,749as Nicolau | 1 in 13K | 3.7K | Nicolau | 6 |
| AR Argentina | 1,047as Nicolau | 1 in 43K | 1K | — | — |
| US United States | 414as Nicolaou | 1 in 803K | 514 | Nikolau | 5 |
| RU Russia | ≈270 est. | ≈1 in 523K | — | Николау | 83 |
| UA Ukraine | ≈96 est. | ≈1 in 457K | — | Ніколау | 9 |
| UY Uruguay | 59as Nicolau | 1 in 57K | 59 | — | — |
| CH Switzerland | 49as Nicolau | 1 in 172K | 49 | — | — |
| BR Brazil | 47 | 1 in 4.5M | 8.2K | — | — |
| FI Finland | 30as Nicolaou | 1 in 186K | 30 | — | 1 |
3,749 people counted by INE — Padrón per-token widgets (current living counts, given + apellidos). 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: IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname); IBGE — Nomes (census name API); INE — Padrón per-token widgets (current living counts, given + apellidos); INE — Apellidos más frecuentes (Padrón Municipal); RENAPER — Apellidos (person counts, national); Census Bureau — Surname Frequency 2010; Census Bureau — Surname Frequency 2020; INE Uruguay — Apellidos más frecuentes 1902–2024 (Tableau Public); BFS — Familiennamen der Wohnbevölkerung (surnames); DVV — Nimipalvelu (Finnish name service, per-name lookup). 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)- Josef Václav Nikolaub. 1838CZ(1838-1862)
- Josef Nikolaub. 1884CZtheatrical director (1884-?)
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)Evidence
(measured from records)10 registers and reference works attest this spelling, across 7 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| BR Brazil | IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname) | — | 47 | #109,451 |
| US United States | wru Name Dictionary — US surnames, voter-file supplement (Khanna et al.) | — | — | — |
Reference works 2
- 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
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
- How do you pronounce Nikolau?
- A machine transcription gives /nɪkəɫaʊ/ (IPA) for English.
- In which country does Nikolau have the most bearers?
- In Spain, the national register counted about 3.7 thousand people named Nicolau, more than in any other country we hold.
- Where is Nikolau most common?
- Measured as a share of residents rather than as a count, Nikolau is densest in Brazil — about 1 in 4.5 million people — even though Spain holds more of our records for it.
- How common is the name Nikolau?
- In Brazil, the national register counted 47 people named Nikolau, about 1 in 4.5 million residents.
What do you want to know about Nikolau?
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/nikolauThe 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, “Nikolau”. Data snapshot 2026-10-13.