Giacomini

surname · Latin script

Meaning: patronymic from a pet form of the personal name Giacomo (Dictionary of American Family Names)

(measured from records)Officially recorded in 15 countries · latest register: BFS, 2024

/ʒiɐkumini/(machine-generated) Portuguese · model-generated

Say it inExplore pronunciation →

Giacomini is a surname written in the Latin script, with more bearers in Brazil than in any other country: 4,912 people, counted by IBGE.

  • CHSwitzerland1 in 39K(measured from records)
  • BRBrazil1 in 43K
  • ARArgentina1 in 83K

carrying the name, as counted by each country's national register. 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.

Brazil (measured from records)

4,912 people

Record sources
168 (measured from records)

corpus datasets behind its best-documented spelling

strongest: highest-authority source

1 in 39K (inferred from the name graph)

Switzerland

measured from records inferred from the name graph

Name dossier (print, CSV)Make your nomograph ✦

How to pronounce Giacomini

  • Portuguese:/ʒiɐkumini/(machine-generated) model-generated
  • Spanish:/xjakomini/(machine-generated) model-generated
  • Italian:/d͡ʒakomini/(machine-generated) model-generated

Readings marked model-generated were transcribed by a model; the others are quoted from the dictionary named.

Meaning & origin

(measured from records)

patronymic from a pet form of the personal name Giacomo.

Cited for this meaning 1

  • Dictionary of American Family Names

Attested in 1 language in the etymology graph.

Where the surname Giacomini is found

(measured from records)

Giacomini 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 Giacomini is recorded, by country
CountryMost common spellingSources
BR Brazil4,9121 in 43K4.9K——
US United States6811 in 488K721Giacomini52
AR Argentina5481 in 83K548——
CH Switzerland2141 in 39K214Giacomini9
NL Netherlands781 in 222K78Giacomini4
BE Belgium661 in 178K66Giacomini13
UY Uruguay281 in 121K28——

4,912 people counted by IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname). 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 — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname); Census Bureau — Surname Frequency 2010; Census Bureau — Surname Frequency 2020; RENAPER — Apellidos (person counts, national); BFS — Familiennamen der Wohnbevölkerung (surnames); CBG Familienamenbank — Dutch surname bearer counts (GBA/BRP 2007); Familienaam.be — Belgian family-name frequency (population register); INE Uruguay — Apellidos más frecuentes 1902–2024 (Tableau Public). 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)

Giacomini is also recorded as another name, grouped separately because the records behind them do not connect to the one described above.

  • Italian surname4 spellings in the group

    Most recorded in Italy, United States, United Kingdom, Canada

    Also written Giacomìni, Gïäcömïnï, Giacominï

36 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)

Giacomini 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, de Giacomo com suf. plural -ini

    as a nameDicionário dos sobrenomes italianos

  • In Italian, Variante di Giacomi

    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)
19201940196019802000Massimo Giacomini, b. 1939Giuseppe Giacomini, b. 1940Audrey Giacomini, b. 1986

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)
FormalPrezado(a) Giacomini,Dear Giacomini, (English)
InformalPrezado(a) Giacomini,Hello, (English)

Evidence

(measured from records)

25 registers and reference works attest this spelling, across 15 countries.

Register rows as of the 2026-10-09 data build.

Frequently asked questions

What does the name Giacomini mean, and where does it come from?
patronymic from a pet form of the personal name Giacomo. Recorded by Dictionary of American Family Names.
How do you pronounce Giacomini?
It depends on the language: in Portuguese /ʒiɐkumini/; in Spanish /xjakomini/; in Italian /d͡ʒakomini/. Transcriptions are machine-generated except where a dictionary is named.
Which countries have the most people with the surname Giacomini?
In Brazil, the national register counted about 4.9 thousand people named Giacomini, more than in any other country we hold. After it come United States, Argentina, Switzerland and Netherlands; the country table on this page ranks them.
Where is Giacomini most common?
Measured as a share of residents rather than as a count, Giacomini is densest in Switzerland — about 1 in 39 thousand people — even though Brazil holds more of our records for it.
How common is the name Giacomini?
In Brazil, the national register counted 4,912 people named Giacomini, about 1 in 43 thousand residents.

What do you want to know about Giacomini?

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

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, “Giacomini” — ranked 2274th in Brazil (IBGE). Data snapshot 2026-10-13.

See how Giacomini parses inside a full name →