Cósimo
surname · Latin script
Cósimo is a surname written in the Latin script, with more bearers in Italy than in any other country. Recorded meaning: From Ancient Greek Κοσμᾶς (Kosmâs). Compare Sicilian Còcimu and Còsimu. Cósimo is also written Козимо in Cyrillic.
- ITItaly≈1 in 1.1K(inferred from the name graph)
- CHSwitzerland≈1 in 14Kfew records
- BEBelgium≈1 in 37Kfew records
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)
- 2 (measured from records)
- Record sources
- 179 (measured from records)
- ≈1 in 1.1K (inferred from the name graph)
≈54,000 people, est.
recorded for this name
corpus datasets behind its best-documented spelling
strongest: highest-authority source
Italy, est.
measured from records inferred from the name graph
Cósimo in other scripts: Cyrillic
(measured from records)One other spelling is counted as the same name:
Locally spelled Cosimo in IT Italy, US United States, FR France and 2 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
(measured from records)From Ancient Greek Κοσμᾶς (Kosmâs). Compare Sicilian Còcimu and Còsimu.
Cited for this meaning 6
- DUDEN Lexikon der Vornamen
- Wiktionary
- Dicionário dos sobrenomes italianos
- Nomi e Cognomi: Saggio di ricerche etimologiche e storiche
- Dizionario Dei Nomi e Cognomi Italiani
Attested across 21 languages in the etymology graph.
Where in the world
(measured from records)Cósimo 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 | #309 | ≈54,000 est. | ≈1 in 1.1K | 212 | Cosimo | 179 |
| US United States | — | 779 | 1 in 427K | 777 | Cosimo | 170 |
| CH Switzerland | — | ≈660 est. | ≈1 in 14K | 12 | Cosimo | 42 |
| FR France | — | ≈440 est. | ≈1 in 157K | 165 | Cosimo | 140 |
| BE Belgium | — | ≈320 est. | ≈1 in 37K | — | Cosimo | 34 |
| AU Australia | — | ≈260 est. | ≈1 in 103K | 4 | — | — |
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: ISTAT — Contanomi newborn per-name series (1999–2024, JSONP backend); Census Bureau — First Name Frequency 2020 by sex; INSEE — Fichier des prénoms (1900–2024); BFS — Familiennamen der Wohnbevölkerung (surnames); Australian national given names (aggregated state BDM). 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
- What does the name Cósimo mean, and where does it come from?
- From Ancient Greek Κοσμᾶς (Kosmâs). Compare Sicilian Còcimu and Còsimu. Recorded by DUDEN Lexikon der Vornamen and Wiktionary and 4 other sources.
- Which countries have the most people named Cósimo?
- Mondonomo estimates about 54 thousand people named Cósimo in Italy, more than in any other country we hold, where it is most often spelled cosimo. After it come United States, Switzerland, France and Belgium; the country table on this page ranks them.
- How common is the name Cósimo?
- In the United States, the national register counted 779 people named Cósimo in 2020, about 1 in 427 thousand residents.
- How common is Cósimo compared with other names?
- In Italy, Cósimo is the 309th most common given name of 102,667 given names recorded there.
What do you want to know about Cósimo?
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/c%C3%B3simoThe 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, “Cósimo” — ranked 113th in Italy (ISTAT). Data snapshot 2026-10-13.