Ronnau

surname · Latin script

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

/ɹənnaʊ/(machine-generated) pronunciation, model-generated

Ronnau is a surname written in the Latin script, with more bearers in Germany than in any other country.

rarermore common
  • USUnited States1 in 2.9M(measured from records)
  • DEGermany≈1 in 155K
  • SGSingapore≈1 in 969K

carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). One hue, darker where it is more common; hover a country for its figure.

Germany (inferred from the name graph)

≈520 people, est.

Sources
103 (measured from records)

Highest-authority source

≈1 in 155K (inferred from the name graph)

Germany, est.

measured from records inferred from the name graph

Spellings & scripts(measured from records)

2 other spellings are counted as the same name:

Locally spelled Rönnau in DE Germany.

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.

Attested across 6 languages in the etymology graph.

Where in the world(measured from records)

Ronnau 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 Ronnau is recorded, by country
CountryMost common spellingSources
DE Germany≈520 est.≈1 in 155K—Rönnau41
BR Brazil1881 in 1.1M188—1
US United States1131 in 2.9M128Ronnau103
AR Argentina331 in 1.4M33——
CA Canada≈13 est.≈1 in 2.9M—Ronnau3
BE Belgium≈11 est.≈1 in 1M—Ronnau1
SG Singapore≈6 est.≈1 in 969K—Ronnau1

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; IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname); RENAPER — Apellidos (person counts, national). 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)

Ronnau is also recorded as 7 other names, grouped separately because the records behind them do not connect to the one described above.

  • Portuguese surname4 spellings in the group

    Most recorded in Brazil, Argentina, United States, Paraguay

    Languages: Portuguese, Spanish

    Also written Rönnau

  • a separate name2 spellings in the group

    Also written Rönnau

  • French surname3 spellings in the group

    Most recorded in United States

    Also written Rönnau

  • Swahili surname2 spellings in the group

    Most recorded in United States

    Also written Rönnau

  • Danish surname4 spellings in the group

    Most recorded in Denmark

    Also written Rönnau

  • Arabic surname2 spellings in the group

    Most recorded in Egypt

    Also written Rönnau

  • a separate name3 spellings in the group

    Also written Rönnau

14 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.

How to address them(machine-generated)

FormalDear Ronnau,
InformalHello,

Evidence(measured from records)

Attested in 7 sources across 3 countries.

Official registers attesting Ronnau
CountryRegisterYearCountRank
BR BrazilIBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname)—188#38,644
US United StatesCensus Bureau — Surname Frequency 20202020128#136,082
US United StatesCensus Bureau — Surname Frequency 20102010113#146,201
US United StatesCensus Bureau — Surname Frequency 20002000112#137,816
AR ArgentinaRENAPER — Apellidos (person counts, national)—33—
US United Stateswru Name Dictionary — US surnames, Census 2010 subset (Khanna et al.)———

Reference works 1

  • 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

How do you pronounce Ronnau?
A machine transcription gives /ɹənnaʊ/ (IPA) for English.
In which country does Ronnau have the most bearers?
Mondonomo estimates about 516 people named Ronnau in Germany, more than in any other country we hold, where it is most often spelled rönnau.
How common is the name Ronnau?
In Brazil, the national register counted 188 people named Ronnau, about 1 in 1.1 million residents.

What do you want to know about Ronnau?

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Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/ronnau

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, “Ronnau”. Data snapshot 2026-10-10.

See how Ronnau parses inside a full name →