Billy

given name · Latin script

Meaning: A fellow, companion, comrade, mate; partner, brother

A male name· listed as male by the registers that count names by sex

(measured from records)Officially recorded in 56 countries · latest register: SSA, 2025

/ˈbɪli/(recorded in a dictionary) English · from Wiktionary

Say it in

Billy is a male given name written in the Latin script, with more bearers in the United States than in any other country.

  • IEIreland≈1 in 810(inferred from the name graph)
  • SGSingapore≈1 in 850
  • NZNew Zealand≈1 in 1.2K

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.

United States (measured from records)

173,433 people, 2020

#629 (measured from records)

of 15M given names, spellings grouped

Record sources
575 (measured from records)

corpus datasets behind its best-documented spelling

strongest: highest-authority source

≈1 in 812 (inferred from the name graph)

Ireland, est.

measured from records inferred from the name graph

Meaning & origin

(measured from records)

A fellow, companion, comrade, mate; partner, brother.

Cited for this meaning 1

  • kaikki.org Wiktionary extract (IPA + transliterations)

Attested across 10 languages in the etymology graph.

Often considered alongside

Names that people choosing a name often weigh against Billy, most often first. They share a style rather than an origin.

From the names suggested together in public name-advice forums, in English. A list of what people consider, not a measure of how common any name is.

Where in the world

(measured from records)

Billy 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 Billy is recorded, by country
CountryMost common spellingSources
US United States#257173,4331 in 1.9K171KBilly575
PH Philippines#821≈43,000 est.≈1 in 2.7K—Billy127
GB United Kingdom#300≈42,000 est.≈1 in 1.7K17Billy269
CA Canada#295≈26,000 est.≈1 in 1.6K4Billy197
AU Australia#396≈15,000 est.≈1 in 1.8K376Billy222
SG Singapore#105≈7,100 est.≈1 in 849—Billy80
IE Ireland#131≈6,600 est.≈1 in 81287Billy103
HK Hong Kong#178≈6,300 est.≈1 in 1.2K—Billy77
NZ New Zealand#232≈4,500 est.≈1 in 1.2K49Billy99

173,433 people counted by Census Bureau — First Name Frequency 2020 by sex, 2020. 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 — First Name Frequency 2020 by sex; NRS — Baby names Scotland full list (1974–present); Alberta Open Government — Frequency and Ranking of Baby Names by Year and Gender; Australian national given names (aggregated state BDM); CSO — Irish Babies Names (1998–present); DIA — Baby name popularity (1900–present). 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)

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

  • Spanish given name18 spellings in the group

    Most recorded in United States, Peru, Philippines, Brazil

    Languages: Spanish, Portuguese, Italian

    Also written Bíllý, Bïlly, Bïllÿ, Biĺly, Bîllý

  • Indonesian given name4 spellings in the group

    Most recorded in Indonesia, United States, Philippines, Malaysia

    Languages: Indonesian, Malay

    Also written 'Billy, Bïlly

  • Polish given name28 spellings in the group

    Most recorded in Poland, United States, Czechia, Slovakia

    Languages: Polish, Czech, Russian

    Also written Били, Billý, Bili, Bílly, Bíllý

  • Greek given name4 spellings in the group

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

    Also written Μπίλλυ, Μπιλλυ, Bíllÿ

75 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)

Billy is also recorded in 4 other lexicons, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.

  • In French, voir De Billy

    as a nameDictionnaire des noms de famille du Canada français. Anthroponymie et généalogie. 2e édition

  • In Swedish, Billy är ursprungligen en engelsk smekform till → William.

    as a nameFörnamn i Sverige. Kortfattat namnlexikon

  • In German, männl. Vom., engHsche Koseform von

    as a nameDUDEN Lexikon der Vornamen

  • In Swedish, a male given name borrowed from English

    as a wordkaikki.org Wiktionary extract (IPA + transliterations)

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)
19001920194019601980Billy Wilder, b. 1906Billy Wright, b. 1924Billy Williams, b. 1929Billy Goldenberg, b. 1936Billy Connolly, b. 1942Billy Crystal, b. 1948Billy Zane, b. 1966Billy Burke, b. 1966Billy Boyd, b. 1968Billy Porter, b. 1969

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)
InformalHi Billy,

A formal English salutation is built on the surname, so it needs a full name — on its own, a first name only supports the informal form.

Evidence

(measured from records)

100 registers and reference works attest this spelling, across 56 countries.

Official registers attesting Billy
CountryRegisterYearCountRank
US United StatesCensus Bureau — First Name Frequency 2020 by sex2020171K#320
US United StatesCensus Bureau — First Name Frequency 2020 by sex20202K#320
AU AustraliaAustralian national given names (aggregated state BDM)2023376—
US United StatesSSA — National Baby Names (1880–present)2025203—
AU AustraliaAU state BDM — consolidated top baby names (NSW + SA + QLD)2025152#44
AU AustraliaNSW BDM — Popular baby names (1952–present)2025152#44
AU AustraliaQLD BDM — Top 100 Baby Names Queensland (1960–present)2025120—
IE IrelandCSO — Irish Babies Names (1998–present)201987#75
CA CanadaStatistics Canada — First names at birth by sex at birth (Table 17-10-0147-01)202473—
NZ New ZealandDIA — Baby name popularity (1900–present)202549—
AU AustraliaSA BDM — Popular baby names South Australia (1944–present)202534#45
GB United KingdomNRS — Baby names Scotland full list (1974–present)202417#234

Reference works 7

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 are other forms of the name Billy?
In the etymology graph, William, Guillermo and Guilherme are forms of the same name in other languages; it is recorded as a short form of Willie and Bill.
Is Billy a male or female name?
Billy is a male name. National registers that list it by sex list it as male: United States (Census Bureau, 2020), France (INSEE, 2024), Ecuador (INEC, 2024) and Brazil (IBGE, 2022), among others.
What does the name Billy mean, and where does it come from?
A fellow, companion, comrade, mate; partner, brother. Recorded by kaikki.org Wiktionary extract (IPA + transliterations).
In which country does Billy have the most bearers?
In the United States, the national register counted about 173 thousand people named Billy, more than in any other country we hold, where it is most often spelled billy.
How common is the name Billy?
In the United States, the national register counted 173,433 people named Billy in 2020, about 1 in 1.9 thousand residents.
How common is Billy compared with other names?
In the United States, Billy is the 257th most common given name of 2,815,431 given names recorded there.
How do you pronounce Billy?
In English /ˈbɪli/ (Wiktionary).

What do you want to know about Billy?

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/billy

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, “Billy” — the 257th most common given name in United States. Data snapshot 2026-10-13.

See how Billy parses inside a full name →