Casadio
surname · Latin script
Meaning: forma reduzida de Casadidio
(measured from records)Officially recorded in 11 countries · latest register: BFS, 2024
/kasadjo/(machine-generated) Italian · model-generated
Casadio is a surname written in the Latin script, with more bearers in Italy than in any other country.
- ITItaly≈1 in 35K(inferred from the name graph)
- CZCzechia1 in 823K
- FRFrance≈1 in 1.1M
carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). 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.
- Italy (inferred from the name graph)
- Record sources
- 89 (measured from records)
- ≈1 in 35K (inferred from the name graph)
≈1,800 people, est.
corpus datasets behind its best-documented spelling
strongest: highest-authority source
Italy, est.
measured from records inferred from the name graph
Meaning & origin
(measured from records)forma reduzida de Casadidio
Cited for this meaning 1
- Dicionário dos sobrenomes italianos
Where in the world
(measured from records)Casadio 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 | |||
|---|---|---|---|---|---|
| IT Italy | ≈1,800 est. | ≈1 in 35K | listed | Casadio | 89 |
| BR Brazil | 266 | 1 in 796K | 266 | Casadio | 43 |
| AR Argentina | 112 | 1 in 406K | 112 | Casadio | 30 |
| FR France | ≈61 est. | ≈1 in 1.1M | 9 | — | 1 |
| US United States | ≈37 est. | ≈1 in 9.1M | listed | Casadio | 36 |
| CH Switzerland | 33 | 1 in 255K | 33 | Casadio | 3 |
| CZ Czechia | 13 | 1 in 823K | 13 | — | — |
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: the italian-surnames-defelice-1978 register; RENAPER — Apellidos (person counts, national); IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname); the us-wru-surnames-voterfile register; BFS — Familiennamen der Wohnbevölkerung (surnames); MVČR — living population register 2017; INSEE — Fichier des noms de famille (1891–2000). 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 recorded senses
(measured from records)Casadio is also recorded in one other lexicon, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.
In Italian, Variante di Casadei
as a nameDizionario dei cognomi italiani
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)- Tolmino Casadiob. 1916ITItalian association football player
- Aglauco Casadiob. 1917ITItalian film director, screenwriter and author
- Rolando Hammerb. 1921CLnot in their usual nameChilean basketball player
- Valerio Casadiob. 1948ITItalian hellenist (born 1948)
- Giovanni Casadiob. 1950ITItalian historian of religion (1950-)
- Claudio Casadiob. 1956ITItalian politician (1956)
- Claudio Casadiob. 1958ITItalian stage actor (1958)
- Valentina Casadiob. 1984ITItalian molecular biologist
- Julia Rose CasadioNZsports physiologist and author of 2017 doctoral thesis at Auckland University of Technology titled Novel Applications of Heat Training to Enhance Performane in Elite Athletes
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)15 registers and reference works attest this spelling, across 11 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| BR Brazil | IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname) | — | 266 | #29,165 |
| AR Argentina | RENAPER — Apellidos (person counts, national) | — | 112 | — |
| CH Switzerland | BFS — Familiennamen der Wohnbevölkerung (surnames) | 2024 | 33 | #25,467 |
| CZ Czechia | MVČR — living population register 2017 | — | 13 | #68,209 |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1971 | 11 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1991 | 9 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1981 | 8 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1951 | 8 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1921 | 8 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1941 | 7 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1961 | 5 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1901 | 5 | — |
Reference works 2
- Wikidata name items (native-script + romanized given/family names)
- Cognomix.it (Nomix s.r.l.) — Italian surname origin dictionary
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
- What does the name Casadio mean, and where does it come from?
- forma reduzida de Casadidio Recorded by Dicionário dos sobrenomes italianos.
- How do you pronounce Casadio?
- It depends on the language: in Italian /kasadjo/; in Spanish /kasaðjo/; in Portuguese /kɐzɐdju/. Transcriptions are machine-generated except where a dictionary is named.
- In which country does Casadio have the most bearers?
- Mondonomo estimates about 1.8 thousand people named Casadio in Italy, more than in any other country we hold, where it is most often spelled casadio.
- How common is the name Casadio?
- In Brazil, the national register counted 266 people named Casadio, about 1 in 796 thousand residents.
What do you want to know about Casadio?
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/casadioThe 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, “Casadio”. Data snapshot 2026-10-13.