Casir
surname · Latin script
Recorded as a male name· opposite-gender records fall within measured source noise
Casir is a surname written in the Latin script, with more bearers in the Philippines than in any other country.
- PHPhilippines≈1 in 341K(inferred from the name graph)
- ARArgentina1 in 711K
- ESSpain≈1 in 10M
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.
- Philippines (inferred from the name graph)
- Sources
- 24 (measured from records)
- ≈1 in 341K (inferred from the name graph)
≈320 people, est.
Highest-authority source
Philippines, est.
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)
Casir 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 | |||
|---|---|---|---|---|---|
| PH Philippines | ≈320 est. | ≈1 in 341K | — | Casir | 5 |
| AR Argentina | 64 | 1 in 711K | 64 | Casir | 23 |
| BR Brazil | ≈8 est. | ≈1 in 26M | — | Casir | 3 |
| US United States | ≈7 est. | ≈1 in 48M | listed | Casir | 12 |
| ES Spain | ≈5 est. | ≈1 in 10M | — | Casir | 6 |
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); the us-wru-surnames-voterfile register. 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)
Attested in 4 sources across 3 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| AR Argentina | RENAPER — Apellidos (person counts, national) | — | 64 | — |
| US United States | wru Name Dictionary — US surnames, voter-file supplement (Khanna et al.) | — | — | — |
Reference works 1
- Nederlandse FamilienamenBank (Dutch surname bank; ex-Meertens Instituut, now CBG)2007
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
- In which country does Casir have the most bearers?
- Mondonomo estimates about 320 people named Casir in the Philippines, more than in any other country we hold, where it is most often spelled casir.
- How common is the name Casir?
- In Argentina, the national register counted 64 people named Casir, about 1 in 711 thousand residents.
What do you want to know about Casir?
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/casirThe 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, “Casir”. Data snapshot 2026-10-10.