Casimiro

surname · Latin script

Recorded as a male name· opposite-gender records fall within measured source noise

Casimiro is a surname written in the Latin script, with more bearers in Mozambique than in any other country. Recorded meaning: Del polaco Kazimierz, "el que impone la paz".

rarermore common
  • PTPortugal≈1 in 6.1K(inferred from the name graph)
  • PEPeru≈1 in 7K
  • ARArgentina1 in 7.3K

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.

Mozambique (inferred from the name graph)

≈7,600 people, est.

Sources
145 (measured from records)

Highest-authority source

≈1 in 4.0K (inferred from the name graph)

Mozambique, est.

measured from records inferred from the name graph

Name dossier (print, CSV)

Meaning & origin(measured from records)

Del polaco Kazimierz, "el que impone la paz".

Sources 1

  • Diccionario etimológico de nombres propios

Attested across 9 languages in the etymology graph.

Where in the world(measured from records)

Casimiro 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 Casimiro is recorded, by country
CountryMost common spellingSources
MZ Mozambique—≈7,600 est.≈1 in 4K1—22
PH Philippines—≈7,600 est.≈1 in 14KlistedCasimiro39
AR Argentina#8176,2311 in 7.3K6.2KCasimiro48
AO Angola#134≈5,300 est.≈1 in 6.1K1Casimiro28
PE Peru#941≈4,600 est.≈1 in 7K—Casimiro54
PT Portugal#365≈1,700 est.≈1 in 6.1KlistedCasimiro84

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); Wikidata humans by citizenship — given & family names; Wikidata humans by citizenship — given & family names. 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)

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

  • French surname3 spellings in the group

    Most recorded in France, Philippines, United States, Belgium

    Also written Cąsimirò

  • Arabic surname4 spellings in the group

    Most recorded in United States, Kuwait, Philippines, Saudi Arabia

    Also written Câsîmiro, Casiḿiro

48 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)

Casimiro is also recorded in 2 other lexicons, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.

  • In Italian, forma italiana de Casimirus

    as a nameDicionário dos sobrenomes italianos

  • Illustre comandante / Colui che proclama la pace

    as a nameIl grande libro dei nomi per bebè. Significato, origini, curiosità. Oltre 7000 nomi per bambine e bambini Significato,…

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)

18001850190019502000Joaquim Casimiro, b. 1808Agnelo Casimiro, b. 1879Augusto Casimiro, b. 1889Efraín Sánchez, b. 1926Fernando Casimiro, b. 1931Isabel Casimiro, b. 1955Carlos Casimiro, b. 1976Gisela Casimiro, b. 1984Henrique Casimiro, b. 1986Casemiro, b. 1992

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).

Evidence(measured from records)

Attested in 55 sources across 29 countries.

Official registers attesting Casimiro
CountryRegisterYearCountRank
AR ArgentinaRENAPER — Apellidos (person counts, national)—6.2K—
AO AngolaWikidata humans by citizenship — given & family names—1#159
MZ MozambiqueWikidata humans by citizenship — given & family names—1#88

Reference works 5

  • Dictionary of American Family Names
  • Nederlandse FamilienamenBank (Dutch surname bank; ex-Meertens Instituut, now CBG)2007
  • 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

What does the name Casimiro mean, and where does it come from?
Del polaco Kazimierz, "el que impone la paz". Recorded by Diccionario etimológico de nombres propios.
What are other forms of the name Casimiro?
In the etymology graph, Kazik and Kázmér are forms of the same name in other languages.
In which country does Casimiro have the most bearers?
Mondonomo estimates about 7.6 thousand people named Casimiro in Mozambique, more than in any other country we hold.
How common is the name Casimiro?
In Argentina, the national register counted 6,231 people named Casimiro, about 1 in 7.3 thousand residents.
How common is Casimiro compared with other names?
In Angola, Casimiro is the 134th most common surname of 23,432 surnames recorded there.

What do you want to know about Casimiro?

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

Please leave out anyone's personal details (see Privacy).

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

The same 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), and bulk access is licensed separately.

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, “Casimiro” — the 134th most common surname in Angola. Data snapshot 2026-10-10.

See how Casimiro parses inside a full name →