Petrillo

surname · Latin script

Meaning: de Petro com sufixo singular -illo

Recorded for both men and women· direction only, no split published

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

Petrillo is a surname written in the Latin script, with more bearers in the United States than in any other country.

rarermore common
  • USUnited States1 in 80K(measured from records)
  • ARArgentina1 in 86K
  • BRBrazil1 in 560K

carrying the name, as counted by each country's national register. One hue, darker where it is more common; hover a country for its figure.

United States (measured from records)

4,179 people, 2010

Sources
100 (measured from records)

Highest-authority source

1 in 32K (inferred from the name graph)

Switzerland

measured from records inferred from the name graph

Name dossier (print, CSV)

Meaning & origin(measured from records)

de Petro com sufixo singular -illo.

Sources 1

  • Dicionário dos sobrenomes italianos

Where in the world(measured from records)

Petrillo 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 Petrillo is recorded, by country
CountryMost common spellingSources
US United States4,1791 in 80K4.2KPetrillo100
AR Argentina5301 in 86K530Petrillo40
BR Brazil3781 in 560K378Petrillo60
CH Switzerland2611 in 32K261Petrillo8
UY Uruguay851 in 40K85Petrillo11
BE Belgium581 in 202K58—1

4,179 people counted by Census Bureau — Surname Frequency 2010, 2010. 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; RENAPER — Apellidos (person counts, national); IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname); BFS — Familiennamen der Wohnbevölkerung (surnames); INE Uruguay — Apellidos más frecuentes 1902–2024 (Tableau Public); Familienaam.be — Belgian family-name frequency (population register). 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)

Petrillo is also recorded as 3 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, United States, Belgium, Italy

    Also written Pétrillo

  • a separate name2 spellings in the group

    Also written Pétrillo

  • Russian surname6 spellings in the group

    Most recorded in United States, Russia, Italy, Ukraine

    Languages: Russian, Ukrainian

    Also written Петрилло, Петрілло

30 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)

Petrillo is also recorded in one other lexicon, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.

  • In Italian, Variante di Pietri

    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)

1850190019502000James Petrillo, b. 1892Sammy Petrillo, b. 1934Agostino Petrillo, b. 1957Steven M. Petrillo, b. 1958Francesco Petrillo, b. 1960Chiara Corbella Petrillo, b. 1984Andi Petrillo, b. 1985Alok, b. 1991Bhaskar, b. 1991

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)

FormalDear Petrillo,
InformalHello,

Evidence(measured from records)

Attested in 27 sources across 18 countries.

Official registers attesting Petrillo
CountryRegisterYearCountRank
US United StatesCensus Bureau — Surname Frequency 201020104.2K#7,920
US United StatesCensus Bureau — Surname Frequency 200020003.9K#7,801
US United StatesCensus Bureau — Surname Frequency 202020203.6K#8,842
AR ArgentinaRENAPER — Apellidos (person counts, national)—530—
BR BrazilIBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname)—378#21,779
CH SwitzerlandBFS — Familiennamen der Wohnbevölkerung (surnames)2024261#4,983
UY UruguayINE Uruguay — Apellidos más frecuentes 1902–2024 (Tableau Public)—85—
BE BelgiumFamilienaam.be — Belgian family-name frequency (population register)200858#23,481
US United Stateswru Name Dictionary — US surnames, Census 2010 subset (Khanna et al.)———

Reference works 3

  • Nederlandse FamilienamenBank (Dutch surname bank; ex-Meertens Instituut, now CBG)2007
  • 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 Petrillo mean, and where does it come from?
de Petro com sufixo singular -illo. Recorded by Dicionário dos sobrenomes italianos.
How do you pronounce Petrillo?
A machine transcription gives /ˌpɛˈtɹɪɫoʊ/ (IPA) for English.
In which country does Petrillo have the most bearers?
In the United States, the national register counted about 4.2 thousand people named Petrillo, more than in any other country we hold, where it is most often spelled petrillo.
Where is Petrillo most common?
Measured as a share of residents rather than as a count, Petrillo is densest in Switzerland — about 1 in 32 thousand people — even though United States holds more of our records for it.
How common is the name Petrillo?
In the United States, the national register counted 4,179 people named Petrillo in 2010, about 1 in 80 thousand residents.

What do you want to know about Petrillo?

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/petrillo

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, “Petrillo”. Data snapshot 2026-10-10.

See how Petrillo parses inside a full name →