The Giacomazzi surname
In the 2010 U.S. Census, 150 people carried this name — #116,201 among all U.S. surnames, about 1 in every 2,000,000 people counted. That is up 2% from 147 in 2000.
What the name means
The meaning of the Giacomazzi surname
A surname transferred from the given name.
Patronymic from a pejorative form of the personal name Giacomo.
From Wiktionary, the free dictionary (en.wiktionary.org) — entry «Giacomazzi» (Italian), by Wiktionary contributors · licensed CC BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0) · excerpt, lightly adapted.
In Argentina’s national register
At least 80 people named Giacomazzi live in Argentina.
RENAPER only publishes a name in a province when more than ten people there share it, so the real number is higher. Most of them live in Mendoza.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where they live today
RENAPER (National Registry of Persons, Argentina), surnames of residents by province, December 2021 — CC BY 4.0.
In France’s civil register
France’s register of deaths holds 66 people named Giacomazzi.
26 of them were born outside France. Those born in France came from 15 départements, most often Yonne.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where they were born
Fichier des personnes décédées, INSEE — Licence Ouverte 2.0 · deaths recorded in France since 1970, by place of birth.
In Switzerland’s population statistics
45 people named Giacomazzi live in Switzerland.
They live in 4 of Switzerland’s 26 cantons, most of all in Ticino.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where they live today
Swiss Federal Statistical Office (FSO), «Surnames of the permanent resident population by canton», 2025, opendata.swiss/en/dataset/nachnamen-der-standigen-wohnbevolkerung-nach-kanton3 · names with fewer than 3 bearers in a canton are not published.
Who carried it
People named Giacomazzi,
with a public archive behind them.
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Giovanni Giacomazzi 1928–1995 · association football player -
Giovanni Giacomazzi 1928–1995 · association football player
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Guillermo Giacomazzi 1977– · association football player -
Giuseppe Giacomazzi 1891–1941 · jurist
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Angelo Giacomazzi 1907–1977 · jazz musician
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Carlos Giacomazzi 1930–2010 · politician
Wikidata and Wikimedia Commons (CC0).
Nearby in the index
Surnames next to Giacomazzi.
- Ghiselli 162 · U.S. census
- Ghulam 287 · U.S. census
- Giacalone 1,654 · U.S. census
- Giachino 197 · U.S. census
- Giacobbi 227 · U.S. census
- Giacoletto 154 · U.S. census
- Giacomelli 410 · U.S. census
- Giacometti 323 · U.S. census
- Giacomi 117 · U.S. census
- Giacomini 681 · U.S. census
- Giacomino 221 · U.S. census
- Giacomo 464 · U.S. census
When the index is not enough
This page says where Giacomazzi is.
A volume says what happened to it.
Every page in the index is free and stays free. The Heritage Volume is the long form: the full paper trail, the arms, the crossing — bound, and yours.