Pierro

surname · Latin script

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

Pierro is a surname written in the Latin script, with more bearers in Italy than in any other country. Recorded meaning: var. meridional de Pietro, Piero.

rarermore common
  • GBUnited Kingdom≈1 in 162K(inferred from the name graph)
  • USUnited States1 in 203K
  • ITItaly≈1 in 17K

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.

Italy (inferred from the name graph)

≈3,700 people, est.

Sources
243 (measured from records)

Highest-authority source

≈1 in 17K (inferred from the name graph)

Italy, est.

measured from records inferred from the name graph

Name dossier (print, CSV)

Meaning & origin(measured from records)

var. meridional de Pietro, Piero

Sources 1

  • Dicionário dos sobrenomes italianos

Attested in 1 language in the etymology graph.

Where in the world(measured from records)

Pierro 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 Pierro is recorded, by country
CountryMost common spellingSources
IT Italy≈3,700 est.≈1 in 17KlistedPierro51
CN China≈2,400 est.≈1 in 581K—Pierro3
US United States1,6351 in 203K1.6KPierro243
BR Brazil≈530 est.≈1 in 397K82—2
GB United Kingdom≈410 est.≈1 in 162K79Pierro59
AR Argentina3401 in 134K340—1
NZ New Zealand≈57 est.≈1 in 86K—Pierro2
UY Uruguay521 in 65K52——

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: Census Bureau — Surname Frequency 2010; Surnames of England and Wales (taliesin-arlein.net, Sept 2002 electoral register); RENAPER — Apellidos (person counts, national); the xinhua-italian-manual register; IBGE — names by decade (Kaggle mirror); 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)

Pierro is also recorded as 4 other names, grouped separately because the records behind them do not connect to the one described above.

  • Spanish surname6 spellings in the group

    Most recorded in Argentina, Brazil, United States, Venezuela

    Languages: Spanish, Portuguese

    Also written Pierrô, Piêrro, Pîèrro, Piêrrõ

  • French surname4 spellings in the group

    Most recorded in France, United States, Italy, Canada

    Also written Pierrõ, Pierrô

  • Italian surname3 spellings in the group

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

    Also written Pierrò, Pièrro

  • Polish surname2 spellings in the group

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

    Also written Pièrro

32 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.

Notable people with this name(measured from records)

190019502000Albino Pierro, b. 1916Bill Pierro, b. 1926Gerardo Pierro, b. 1935Marina Pierro, b. 1956Matteo Pierro, b. 1967Emilia Pierro, b. 1970Simon Pierro, b. 1978Casey Pierro-Zabotel, b. 1988Bryan Pierro, b. 2000

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 26 sources across 15 countries.

Official registers attesting Pierro
CountryRegisterYearCountRank
US United StatesCensus Bureau — Surname Frequency 201020101.6K#17,311
US United StatesCensus Bureau — Surname Frequency 202020201.5K#18,033
US United StatesCensus Bureau — Surname Frequency 200020001.5K#17,304
BR BrazilIBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname)—683#12,877
AR ArgentinaRENAPER — Apellidos (person counts, national)—340—
GB United KingdomSurnames of England and Wales (taliesin-arlein.net, Sept 2002 electoral register)200279#38,380
UY UruguayINE Uruguay — Apellidos más frecuentes 1902–2024 (Tableau Public)—52—
IT Italy意大利语姓名译名手册 (Xinhua Italian Name Manual)———
US United Stateswru Name Dictionary — US surnames, Census 2010 subset (Khanna et al.)———

Reference works 2

  • Wikidata name items (native-script + romanized given/family names)
  • Cognomix.it (Nomix s.r.l.) — Italian surname origin dictionary

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 Pierro mean, and where does it come from?
var. meridional de Pietro, Piero Recorded by Dicionário dos sobrenomes italianos.
In which country does Pierro have the most bearers?
Mondonomo estimates about 3.7 thousand people named Pierro in Italy, more than in any other country we hold, where it is most often spelled pierro.
How common is the name Pierro?
In the United States, the national register counted 1,635 people named Pierro in 2010, about 1 in 203 thousand residents.

What do you want to know about Pierro?

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

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, “Pierro”. Data snapshot 2026-10-10.

See how Pierro parses inside a full name →