Rios

surname · Latin script

Meaning: A surname from Spanish

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

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

Rios is a surname written in the Latin script, with more bearers in Argentina than in any other country, where it is the 32nd most common surname.

rarermore common
  • PRPuerto Rico≈1 in 235(inferred from the name graph)
  • NINicaragua≈1 in 275
  • PYParaguay≈1 in 297

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.

Argentina (measured from records)

140,391 people

#239 (measured from records)

of 19M surnames

3 (measured from records)

recorded for this name

Sources
489 (measured from records)

Highest-authority source

≈1 in 235 (inferred from the name graph)

Puerto Rico, est.

measured from records inferred from the name graph

Name dossier (print, CSV)

Spellings & scripts(measured from records)

RiosLatin(measured from records)
РиосCyrillic(measured from records)
ΡιοςGreek(measured from records)

One other spelling is counted as the same name:

Locally spelled Rìos in UY Uruguay.

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)

A surname from Spanish. An Anglicisation of a Spanish habitational surname from Riós in Galicia

Sources 1

  • kaikki.org Wiktionary extract (IPA + transliterations)

Attested across 17 languages in the etymology graph.

Where in the world(measured from records)

Rios 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 Rios is recorded, by country
CountryMost common spellingSources
AR Argentina#32140,3911 in 324140KRios149
US United States#245127,7941 in 2.6K128KRios489
CO Colombia#56≈110,000 est.≈1 in 42764Rios197
PE Peru#41≈95,000 est.≈1 in 337—Rios165
BR Brazil#20891,1901 in 2.3K91KRios183
PY Paraguay#54≈24,000 est.≈1 in 297—Rios68
NI Nicaragua#29≈23,000 est.≈1 in 275—Rios50
PR Puerto Rico#36≈14,000 est.≈1 in 235—Rios84
UY Uruguay—11,4711 in 29511KRìos68

140,391 people counted by RENAPER — Apellidos (person counts, national). 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; RENAPER — Apellidos (person counts, national); the co-datosgov-candidates register; IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname); 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)

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

  • a separate name8 spellings in the group

    Also written Rĭos, Riós, Riòs, Rí́os, Rìos

  • French surname9 spellings in the group

    Most recorded in France, United States, Peru, Spain

    Languages: French, Catalan

    Also written Rìos, Rïoš, Ríos, Riós, Ríóš

  • Lao surname39 spellings in the group

    Most recorded in Laos, Peru, United States, Thailand

    Languages: Lao, Thai

    Also written รออ, Rìos, รออิ, Riol, รอ่อ

  • Uzbek surname2 spellings in the group

    Most recorded in Peru, United States, Paraguay, Spain

    Also written Ríos

  • Hungarian surname2 spellings in the group

    Most recorded in Hungary, Peru, United States, Spain

    Also written Ríos

  • Polish surname4 spellings in the group

    Most recorded in United States, Poland, Spain, Peru

    Also written Rïöş, Rìos, Ríos

  • Czech surname5 spellings in the group

    Most recorded in Slovakia, Czechia, Peru, United States

    Languages: Czech, Slovak

    Also written Řîôš, Ríos, Rîöš

67 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.

Other recorded senses(measured from records)

Rios is also recorded in 2 other lexicons, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.

  • In English, Spanish; from the river

    as a nameBaby names, 25,350 baby names nicknames for your family, friends pets, including the top 100 names, 2,000 most popular…

  • In ivv, idea of bathing, baptism-making

    as a wordAustronesian Comparative Dictionary (ACD), CLDF v2.0

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)

1940196019802000Anthony Rios, b. 1950Rosa Gumataotao Rios, b. 1965Big Pun, b. 1971Danny Rios, b. 1972Ann Marie Rios, b. 1981Kalena Rios, b. 1983Mariana Rios, b. 1985Jhonny Ríos, b. 1985Danilo Rios, b. 1988Emily Rios, b. 1989

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)

FormalEstimado/a Rios,Dear Rios, (English)
InformalEstimado/a Rios,Hello, (English)

Evidence(measured from records)

Attested in 42 sources across 27 countries.

Official registers attesting Rios
CountryRegisterYearCountRank
AR ArgentinaRENAPER — Apellidos (person counts, national)—140K—
US United StatesCensus Bureau — Surname Frequency 20102010128K#237
US United StatesCensus Bureau — Surname Frequency 20202020126K#233
US United StatesCensus Bureau — Surname Frequency 2000200097K#285
BR BrazilIBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname)—91K#297
UY UruguayINE Uruguay — Apellidos más frecuentes 1902–2024 (Tableau Public)—11K—
CO ColombiaColombia — Función Pública SIGEP II public-servant name corpus (datos.gov.co)—64#54
US United Stateswru Name Dictionary — US surnames, Census 2010 subset (Khanna et al.)———

Reference works 3

  • The Oxford Dictionary of Family Names in Britain and Ireland
  • Nederlandse FamilienamenBank (Dutch surname bank; ex-Meertens Instituut, now CBG)2007
  • 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 Rios come from?
A surname from Spanish. An Anglicisation of a Spanish habitational surname from Riós in Galicia Recorded by kaikki.org Wiktionary extract (IPA + transliterations).
How do you pronounce Rios?
A machine transcription gives /ɾios/ (IPA) for Spanish.
What does the name Rios mean?
Recorded meaning: A surname from Spanish.
In which country does Rios have the most bearers?
In Argentina, the national register counted about 140 thousand people named Rios, more than in any other country we hold, where it is most often spelled rios.
How common is the name Rios?
In Argentina, the national register counted 140,391 people named Rios, about 1 in 324 residents.
How common is Rios compared with other names?
In Argentina, Rios is the 32nd most common surname of 398,256 surnames recorded there.

What do you want to know about Rios?

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

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, “Rios” — the 32nd most common surname in Argentina. Data snapshot 2026-10-10.

See how Rios parses inside a full name →