Roïs

surname · Latin script

Recorded as a male name· opposite-gender records fall within measured source noise

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

rarermore common
  • ESSpain1 in 118K(measured from records)
  • CRCosta Rica1 in 170K
  • UYUruguay1 in 188K

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.

Spain (measured from records)

425 people

Sources
56 (measured from records)

Highest-authority source

1 in 118K (inferred from the name graph)

Spain

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 Rois in ES Spain, US United States.

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)

recorded in Portuguese

corruptela de Rodrigues; Viseu, Idanha-a-Nova, Castela, Bahia, Rio de Janeiro, Minas Gérais

Sources 1

  • Dicionario Sefaradi De SobrenomesDictionary Of Sephardic Surnames Inclusive Cristaos-Novos, Conversos, Marranos, Italianos,…

Attested across 13 languages in the etymology graph.

Where in the world(measured from records)

Roïs 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 Roïs is recorded, by country
CountryMost common spellingSources
ES Spain4251 in 118K425Rois5
BR Brazil3071 in 690K307——
US United States2011 in 1.7M243Rois24
AR Argentina1621 in 281K162——
CR Costa Rica301 in 170K30——
UY Uruguay181 in 188K18——

425 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: INE — Padrón per-token widgets (current living counts, given + apellidos); INE — Apellidos más frecuentes (Padrón Municipal); IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname); Census Bureau — Surname Frequency 2010; Census Bureau — Surname Frequency 2000; RENAPER — Apellidos (person counts, national); TSE — electoral roll (padrón) names; INE Uruguay — Apellidos más frecuentes 1902–2024 (Tableau Public). 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)

Roïs is also recorded as 2 other names, grouped separately because the records behind them do not connect to the one described above.

  • English surname13 spellings in the group

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

    Languages: English, German, Dutch

    Also written Rois, Róis, Ròis, Rõįs, Rồi'S

  • Hindi given name70 spellings in the group

    Most recorded in India, Pakistan, United States, Argentina

    Languages: Hindi, Urdu, Bangla

    Also written Rais, Rois, Raïs, Raeis, Raiş

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)

No register attests this spelling yet

None of the official registers or reference works in our corpus lists Roïs under this spelling. The statistics on this page rest on person records, and the related names are inferred from the name graph.

Frequently asked questions

In which country does Roïs have the most bearers?
In Spain, the national register counted about 425 people named Roïs, more than in any other country we hold, where it is most often spelled rois.
Where is Roïs most common?
Roïs is densest in Spain, where the national register counts about 1 in 118 thousand people carrying it.
How common is the name Roïs?
In Spain, the national register counted 425 people named Roïs, about 1 in 118 thousand residents.

What do you want to know about Roïs?

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Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/ro%C3%AFs

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, “Roïs”. Data snapshot 2026-10-10.

See how Roïs parses inside a full name →