Nassau
loc · Latin script
Meaning: Nassau, formerly the seat of an independent duchy
Recorded as a male name· opposite-gender records fall within measured source noise
/næsɔː/(machine-generated) pronunciation, model-generated
Nassau is a name written in the Latin script, most frequently recorded in Brazil.
- BRBrazil
- DODominican Republic
- PEPeru
Where the name is found, darker where our sources hold more of it. No national register counts its bearers anywhere we hold data, so the map carries no figures. One hue, darker where it is more common; hover a country for its figure.
- Brazil (inferred from the name graph)
- Sources
- 99 (measured from records)
no count published
Highest-authority source
measured from records inferred from the name graph
Meaning & origin(measured from records)
Nassau, formerly the seat of an independent duchy. The name comes from OHG nazz damp, wet + ouwa water meadow.
Sources 1
- A dictionary of surnames
Attested in 1 language in the etymology graph.
Where in the world(measured from records)
Nassau counted together with the spellings and other-language forms grouped with it. Where a register counted another spelling, the row names it.
| Country | Most common spelling | Sources | ||
|---|---|---|---|---|
| BR Brazil | — | 355 | Nassau | 48 |
| PE Peru | — | — | Nassau | 6 |
| MX Mexico | — | — | Nassau | 15 |
| FR France | — | 23 | Nassau | 99 |
| DO Dominican Republic | — | — | Nassau | 1 |
| US United States | — | 241 | — | 24 |
| GB United Kingdom | — | 208 | — | 5 |
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); Census Bureau — Surname Frequency 2020; Surnames of England and Wales (taliesin-arlein.net, Sept 2002 electoral register); 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 recorded senses(measured from records)
Nassau is also recorded in 4 other lexicons, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.
In English, county, FL, NY; city. Bahamas
as a namePronouncing Dictionary of Proper Names
In English, region, Germany
as a namePronouncing Dictionary of Proper Names
In Portuguese, Nassau (a city in Rhineland-Palatinate, Germany)
as a wordkaikki.org Wiktionary extract (IPA + transliterations)
In Czech, Nassau (the capital city of the Bahamas)
as a wordkaikki.org Wiktionary extract (IPA + transliterations)
Ordered by how much of this spelling's record each language holds, so a sense from a language the name is barely used in sits last rather than first.
Notable people with this name(measured from records)
- Henry I of Nassau-Siegenb. 1265DECount of Nassau-Siegen (1303-1343)
- Otto II of Nassau-Siegenb. 1305DECount of Nassau-Siegen (1343-1350/51)
- Henry I of Nassau-Beilsteinb. 1323DEcount of Nassau-Beilstein 1343–1378
- Adolf of Nassau-Siegenb. 1362DECount of Diez, Nassau-Siegen and Vianden
- Philip I of Nassau-Wiesbadenb. 1490DECount of Nassau-Wiesbaden (1511-1554)
- Henry of Nassau-Dillenburgb. 1550DEDutch noble (1550-1574)
- Henry de Nassau, Lord Overkirkb. 1640NLDutch army commander; (1640-1708)
- Friedrich August I, Duke of Nassaub. 1738DEPrince of Nassau-Usingen (1803-1806), Duke of Nassau (1806-1816)
- Princess Henrietta of Nassau-Weilburgb. 1797DEArchduchess of Austria (1797-1829)
- Princess Sophie of the Netherlandsb. 1824NLnot in their usual nameDutch princess (1824-1897)
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)
Attested in 17 sources across 6 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| BR Brazil | IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname) | — | 355 | #22,973 |
| US United States | Census Bureau — Surname Frequency 2020 | 2020 | 241 | #83,936 |
| US United States | Census Bureau — Surname Frequency 2000 | 2000 | 233 | #76,700 |
| US United States | Census Bureau — Surname Frequency 2010 | 2010 | 223 | #84,136 |
| GB United Kingdom | Surnames of England and Wales (taliesin-arlein.net, Sept 2002 electoral register) | 2002 | 208 | #20,760 |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1961 | 29 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1981 | 28 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1971 | 26 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1991 | 23 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1931 | 21 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1951 | 12 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1911 | 11 | — |
Reference works 5
- Dictionary of American Family Names
- The Oxford Dictionary of Family Names in Britain and Ireland
- Nederlandse FamilienamenBank (Dutch surname bank; ex-Meertens Instituut, now CBG)2007
- Wikipedia given-name 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
- Where does the name Nassau come from?
- Nassau, formerly the seat of an independent duchy. The name comes from OHG nazz damp, wet + ouwa water meadow. Recorded by A dictionary of surnames.
- How do you pronounce Nassau?
- A machine transcription gives /næsɔː/ (IPA) for English.
- In which country does Nassau have the most bearers?
- Nassau is most frequently recorded in Brazil, where it is most often spelled nassau.
- What does the name Nassau mean?
- Recorded meaning: Nassau, formerly the seat of an independent duchy.
What do you want to know about Nassau?
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/nassauThe 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, “Nassau”. Data snapshot 2026-10-10.