Cairus
surname · Latin script
Recorded for both men and women· direction only, no split published
/kaiɾus/(machine-generated) pronunciation, model-generated
Cairus is a surname written in the Latin script, with more bearers in Uruguay than in any other country.
- UYUruguay1 in 5K(measured from records)
- GTGuatemala≈1 in 261K
- DODominican Republic≈1 in 799K
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.
- Uruguay (measured from records)
- Sources
- 39 (measured from records)
- 1 in 5.0K (inferred from the name graph)
684 people
Highest-authority source
Uruguay
measured from records inferred from the name graph
Meaning & origin
No verified etymology recorded for this name yet — the entries below are drawn from usage statistics and the name graph.
Where in the world(measured from records)
Cairus 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 | ||||
|---|---|---|---|---|---|---|
| UY Uruguay | #982 | 684 | 1 in 5K | 684 | Cairus | 22 |
| GT Guatemala | — | ≈66 est. | ≈1 in 261K | — | Cairus | 2 |
| BR Brazil | — | 59 | 1 in 3.6M | 59 | Cairus | 19 |
| US United States | — | ≈38 est. | ≈1 in 8.8M | — | Cairus | 39 |
| DO Dominican Republic | — | ≈13 est. | ≈1 in 799K | — | Cairus | 4 |
| CH Switzerland | — | 6 | 1 in 1.4M | 6 | — | 1 |
684 people counted by INE Uruguay — Apellidos más frecuentes 1902–2024 (Tableau Public). 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 Uruguay — Apellidos más frecuentes 1902–2024 (Tableau Public); IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname); BFS — Familiennamen der Wohnbevölkerung (surnames). 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).
Notable people with this name(measured from records)
- Renzo Cairusb. 1990UYUruguayan volleyball player
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 6 sources across 5 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| UY Uruguay | INE Uruguay — Apellidos más frecuentes 1902–2024 (Tableau Public) | — | 684 | — |
| BR Brazil | IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname) | — | 59 | #93,298 |
| CH Switzerland | BFS — Familiennamen der Wohnbevölkerung (surnames) | 2024 | 6 | #89,778 |
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 Cairus?
- A machine transcription gives /kaiɾus/ (IPA) for Spanish.
- In which country does Cairus have the most bearers?
- In Uruguay, the national register counted about 684 people named Cairus, more than in any other country we hold, where it is most often spelled cairus.
- Where is Cairus most common?
- Cairus is densest in Uruguay, where the national register counts about 1 in 5.0 thousand people carrying it.
- How common is the name Cairus?
- In Uruguay, the national register counted 684 people named Cairus, about 1 in 5.0 thousand residents.
- How common is Cairus compared with other names?
- In Uruguay, Cairus is the 982nd most common surname of 57,630 surnames recorded there.
What do you want to know about Cairus?
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/cairusThe 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, “Cairus” — the 982nd most common surname in Uruguay. Data snapshot 2026-10-10.