Dufault

surname · Latin script

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

Dufault is a surname written in the Latin script, with more bearers in the United States than in any other country. Recorded meaning: Probablement de du Faou, dérivé de Châteauneuf-du-Faou, localité du Finistère.

rarermore common
  • USUnited States1 in 181K(measured from records)
  • UYUruguay1 in 17Kas Dufau
  • CHSwitzerland1 in 41Kas Dufaux

carrying the name, as counted by each country's national register. Where a country counts another spelling of the name rather than Dufault itself, the figure is that spelling’s, and it is named. One hue, darker where it is more common; hover a country for its figure.

United States (measured from records)

1,842 people, 2010

2 (measured from records)

recorded for this name

Sources
8 (measured from records)

Highest-authority source

1 in 181K (inferred from the name graph)

United States

measured from records inferred from the name graph

Name dossier (print, CSV)

Spellings & scripts(measured from records)

DufaultLatin(measured from records)
ДюфоCyrillic(measured from records)

2 other spellings are counted as the same name:

Spellings marked ● are how people bearing the name write it in our records, and ○ marks a model's transliteration; click a spelling to open its page.

Meaning & origin(measured from records)

recorded in French

Probablement de du Faou, dérivé de Châteauneuf-du-Faou, localité du Finistère.

Sources 1

  • Dictionnaire des noms de famille du Canada français. Anthroponymie et généalogie. 2e édition

Where in the world(measured from records)

Dufault 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 Dufault is recorded, by country
CountryMost common spellingSources
US United States1,8421 in 181K1.9KDufault8
AR Argentina401as Dufau1 in 113K401——
CH Switzerland205as Dufaux1 in 41K205—1
UY Uruguay201as Dufau1 in 17K201——
BE Belgium197as Dufaux1 in 59K197——

1,842 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; Census Bureau — Surname Frequency 2000; RENAPER — Apellidos (person counts, national); 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).

Notable people with this name(measured from records)

1850190019502000Paul Dufault, b. 1872Will James, b. 1892Wilfrid J. Dufault, b. 1907Pierre Dufault, b. 1934Paul Dufault, b. 1964Luce Dufault, b. 1966Jason Dufault, b. 1979Maryeve Dufault, b. 1982Austin Dufault, b. 1990
  • Paul Dufaultb. 18721872-1930 - Canadian tenor who travelled in Australasia, the Philippines, Hong Kong, Shanghai, and New York in 1917. (See Ernest Empson 'My experiences in the east', at ATL Box q 915 EMP 1917).
  • Will Jamesb. 1892CAnot in their usual nameNovelist, children's writer, artist (1892-1942)
  • Wilfrid J. Dufaultb. 1907USAmerican Catholic priest
  • Pierre Dufaultb. 1934CACanadian journalist and sports commentator (1934–2025)
  • Paul Dufaultb. 1964football player (born 1964)
  • Luce Dufaultb. 1966CACanadian singer
  • Jason Dufaultb. 1979volleyball player
  • Maryeve Dufaultb. 1982CAFrench-Canadian racing driver
  • Austin Dufaultb. 1990USAmerican basketball player (born 1990)
  • Danielle DufaultCACanadian paleoartist and technical illustrator

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 7 sources across 2 countries.

Official registers attesting Dufault
CountryRegisterYearCountRank
US United StatesCensus Bureau — Surname Frequency 200020001.9K#14,724
US United StatesCensus Bureau — Surname Frequency 201020101.8K#15,806
US United StatesCensus Bureau — Surname Frequency 202020201.8K#15,969
CH SwitzerlandBFS — Familiennamen der Wohnbevölkerung (surnames)20243#154,370
US United Stateswru Name Dictionary — US surnames, Census 2010 subset (Khanna et al.)———

Reference works 2

  • 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 Dufault mean?
Recorded meaning: Probablement de du Faou, dérivé de Châteauneuf-du-Faou, localité du Finistère.
In which country does Dufault have the most bearers?
In the United States, the national register counted about 1.8 thousand people named Dufault, more than in any other country we hold, where it is most often spelled dufault.
Where is Dufault most common?
Dufault is densest in the United States, where the national register counts about 1 in 181 thousand people carrying it.
How common is the name Dufault?
In the United States, the national register counted 1,842 people named Dufault in 2010, about 1 in 181 thousand residents.

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Query this name via API
curl https://api.mondonomo.ai/api/v1/name-graph/dufault

The same payload this page is built from: spellings and scripts, countries and languages, related names, and the registers that attest the form. Rate-limited for casual use; a free API key gives 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, “Dufault”. Data snapshot 2026-10-10.

See how Dufault parses inside a full name →