Cosmo

given name · Latin script

Meaning, in Portuguese: cosmos (the universe)

A male name· listed as male by the registers that count names by sex

(measured from records)Officially recorded in 32 countries · latest register: SSA, 2025

/kɔʒmu/(machine-generated) pronunciation, model-generated

Cosmo is a male given name written in the Latin script, with more bearers in Brazil than in any other country.

rarermore common
  • BRBrazil1 in 13K(measured from records)
  • GBUnited Kingdom≈1 in 118K
  • USUnited States1 in 195K

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.

Brazil (measured from records)

16,619 people, 2022

Record sources
236 (measured from records)

corpus datasets behind its best-documented spelling

strongest: highest-authority source

1 in 13K (inferred from the name graph)

Brazil

measured from records inferred from the name graph

Meaning & origin

(measured from records)

Italian form (also found as Cosimo) of the Greek name Kosmas (a short form of various names containing the word kosmos ‘order’, ‘beauty’). This was borne by a Christian saint martyred, together with his brother Damian, at

Cited for this meaning 1

  • A concise dictionary of first names

Attested across 8 languages in the etymology graph.

How Cosmo is read

(measured from records)

Cosmo is one spelling over 2 language communities, and the dictionaries record it differently in 2 of them. Each row is what a source recorded for that language, beside the share of this name’s records the language holds. No single row is the name’s meaning.

  • Portuguese70%

    cosmos (the universe)

    as a wordkaikki.org Wiktionary extract (IPA + transliterations)

  • English21%

    A cosmopolitan, a cocktail containing vodka, triple sec, lime juice, and cranberry juice.

    as a wordkaikki.org Wiktionary extract (IPA + transliterations)

    nickname for Cosmopolitan

    as a namePronouncing Dictionary of Proper Names

The share is ours — how much of this name’s records each language holds. The sense beside it is the source’s, quoted and credited, including where it names a gender. We do not publish a gender of our own per language: our records carry one figure for the spelling as a whole.

Often considered alongside

Names that people choosing a name often weigh against Cosmo, most often first. They share a style rather than an origin.

From the names suggested together in public name-advice forums, in English. A list of what people consider, not a measure of how common any name is.

Where in the world

(measured from records)

Cosmo 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.

Where Cosmo is recorded, by country
CountryMost common spellingSources
BR Brazil#80316,6191 in 13K18KCosmo93
US United States—1,7041 in 195K1.7KCosmo236
IT Italy—≈1,600 est.≈1 in 40K22Cosmo35
GB United Kingdom—≈560 est.≈1 in 118K3Cosmo98
ZA South Africa—≈380 est.≈1 in 148K—Cosmo12
SE Sweden—1341 in 76K134—13
FI Finland—761 in 73K85—3
GY Guyana—121 in 63K12—3

16,619 people counted by IBGE — names by decade (Kaggle mirror), 2022. 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: IBGE — names by decade (Kaggle mirror); IBGE — Nomes (census name API); Census Bureau — First Name Frequency 2020 by sex; NRS — Baby names Scotland full list (1974–present); ISTAT — Contanomi newborn per-name series (1999–2024, JSONP backend); Skatteverket — Sök hur många som har ett visst namn (living population); DVV — Etunimitilasto (Finnish given names register); DVV — Nimipalvelu (Finnish name service, per-name lookup); Guyana — Official List of Electors July 2025. 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 names spelled this way

(inferred from the name graph)

Cosmo is also recorded as 2 other names, grouped separately because the records behind them do not connect to the one described above.

  • Chinese given name2 spellings in the group

    Most recorded in United States, United Kingdom, South Africa, Taiwan

    Also written Cosm

  • Arabic given name3 spellings in the group

    Most recorded in United States, Egypt, South Africa, United Kingdom

    Also written Cosmõ

59 further groups record this spelling and are not listed here.

Grouping is the name graph's, not a register's: two spellings join a group when the evidence links them, so a group is a claim about the records rather than about the people.

Other recorded senses

(measured from records)

Cosmo is also recorded in 3 other lexicons, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.

  • Italian form (also found as Cosimo) of the Greek name Kosmas (a short form of various names containing the word kosmos ‘order’, ‘beauty’). This was borne by a Christian saint martyred, together with his brother Damian, at

    as a nameA concise dictionary of first names

  • From Greek. See main dictionary. Also: Cosimo. Feminine form: )}Cosima (see main dictionary).

    as a nameA concise dictionary of first names

  • In Italian, variante medieval de Cosma

    as a nameDicionário dos sobrenomes italianos

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)
1700180019002000Cosmo Gordon, 3rd Duke of Gordon, b. 1720Cosmo Alexander, b. 1724Cosmo Innes, b. 1798Cosmo Duff-Gordon, b. 1862Cosmo Gordon Lang, b. 1864Cosmo Hamilton, b. 1870Cosmo Haskard, b. 1916Cosmo Francesco Ruppi, b. 1932Anthony Callea, b. 1982Cosmo Jarvis, b. 1989

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)
InformalOlá Cosmo,Hi Cosmo, (English)

A formal English salutation is built on the surname, so it needs a full name — on its own, a first name only supports the informal form.

Evidence

(measured from records)

66 registers and reference works attest this spelling, across 32 countries.

Reference works 4

  • Dictionary of American Family Names
  • Wikipedia given-name tokens
  • Wikipedia surname tokens
  • 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

Where does the name Cosmo come from?
Italian form (also found as Cosimo) of the Greek name Kosmas (a short form of various names containing the word kosmos ‘order’, ‘beauty’). Recorded by A concise dictionary of first names.
Is Cosmo a male or female name?
Cosmo is a male name. National registers that list it by sex list it as male: Brazil (IBGE) and United States (Census Bureau, 2020).
What does the name Cosmo mean?
In Portuguese, cosmos (the universe)
What are other forms of the name Cosmo?
In the etymology graph, Cosme, Cosmin and Cosimo are forms of the same name in other languages.
In which country does Cosmo have the most bearers?
In Brazil, the national register counted about 17 thousand people named Cosmo, more than in any other country we hold, where it is most often spelled cosmo.
Where is Cosmo most common?
Cosmo is densest in Brazil, where the national register counts about 1 in 13 thousand people carrying it.
How common is the name Cosmo?
In Brazil, the national register counted 16,619 people named Cosmo in 2022, about 1 in 13 thousand residents.
How common is Cosmo compared with other names?
In Brazil, Cosmo is the 803rd most common given name of 474,894 given names recorded there.
How do you pronounce Cosmo?
A machine transcription gives /kɔʒmu/ (IPA) for Portuguese.

What do you want to know about Cosmo?

Nobody replies to these one by one, but what readers ask decides what these pages answer next.

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Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/cosmo

The 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, “Cosmo” — the 803rd most common given name in Brazil. Data snapshot 2026-10-13.

See how Cosmo parses inside a full name →