Rìòs
surname · Latin script
Rìòs is a surname written in the Latin script, with more bearers in Argentina than in any other country: 140,391 people, counted by RENAPER. In Laos it is the 53rd most common surname. Rìòs is also written รออ in Thai.
- UYUruguay1 in 295(measured from records)
- ARArgentina1 in 324
- CRCosta Rica1 in 507
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 Rìòs itself, the figure is that spelling’s, and it is named. Countries with no figure are shown too: flat where a national register lists the name without counting it, hatched where only our records hold it. One hue, darker where it is more common; hover a country for its figure.
- Argentina (measured from records)
- 2 (measured from records)
- Record sources
- 46 (measured from records)
- 1 in 295 (inferred from the name graph)
140,391 people
recorded for this name
corpus datasets behind its best-documented spelling
strongest: highest-authority source
Uruguay
measured from records inferred from the name graph
Rìòs in other scripts: Thai
(measured from records)One other spelling is counted as the same name:
Locally spelled Rios in US United States, ES Spain, EC Ecuador and 1 more.
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 23 languages in the etymology graph.
Where the surname Rìòs is found
(measured from records)Rìòs 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 | ||||
|---|---|---|---|---|---|---|
| AR Argentina | — | 140,391 | 1 in 324 | 140K | — | 1 |
| US United States | — | 127,794 | 1 in 2.6K | 128K | Rios | 46 |
| BR Brazil | — | 91,190 | 1 in 2.3K | 91K | — | — |
| ES Spain | — | 44,087 | 1 in 1.1K | 44K | Rios | 11 |
| EC Ecuador | — | 19,594 | 1 in 863 | 20K | Rios | 6 |
| UY Uruguay | — | 11,471 | 1 in 295 | 11K | — | — |
| CR Costa Rica | — | 10,053 | 1 in 507 | 10K | — | — |
| LA Laos | #53 | — | — | — | Rios | 5 |
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: RENAPER — Apellidos (person counts, national); Census Bureau — Surname Frequency 2010; IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname); INE — Padrón per-token widgets (current living counts, given + apellidos); INE — Apellidos más frecuentes (Padrón Municipal); INEC — civil registry names; INE Uruguay — Apellidos más frecuentes 1902–2024 (Tableau Public); TSE — electoral roll (padrón) names. 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).
Evidence
(measured from records)No register attests this spelling yet
Frequently asked questions
- Which countries have the most people with the surname Rìòs?
- In Argentina, the national register counted about 140 thousand people named Rìòs, more than in any other country we hold. After it come United States, Brazil, Spain and Ecuador; the country table on this page ranks them.
- Where is Rìòs most common?
- Measured as a share of residents rather than as a count, Rìòs is densest in Uruguay — about 1 in 295 people — even though Argentina holds more of our records for it.
- How common is the name Rìòs?
- In Argentina, the national register counted 140,391 people named Rìòs, about 1 in 324 residents.
- How common is Rìòs compared with other names?
- In Laos, Rìòs is the 53rd most common surname of 46,319 surnames recorded there.
What do you want to know about Rìòs?
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/r%C3%AC%C3%B2sThe 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, “Rìòs” — the 53rd most common surname in Laos. Data snapshot 2026-10-13.