Thoai

given name · Latin script

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

/tʰwaː˨˥j/(machine-generated) pronunciation, model-generated

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

rarermore common
  • USUnited States1 in 651K(measured from records)
  • SESweden1 in 378K
  • FIFinland1 in 1.1M

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)

511 people, 2020

Sources
61 (measured from records)

Highest-authority source

1 in 378K (inferred from the name graph)

Sweden

measured from records inferred from the name graph

Name dossier (print, CSV)

Meaning & origin

No verified etymology recorded for this name yet — the entries below are drawn from usage statistics and the name graph.

Attested in 1 language in the etymology graph.

Where in the world(measured from records)

Thoai 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 Thoai is recorded, by country
CountryMost common spellingSources
US United States5111 in 651K375Thoai61
SE Sweden271 in 378K27—2
FI Finland51 in 1.1M25——
DK Denmark31 in 2M3——
PL Poland31 in 13M3——

511 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; Skatteverket — Sök hur många som har ett visst namn (living population); DVV — Etunimitilasto (Finnish given names register); DVV — Nimipalvelu (Finnish name service, per-name lookup); Danmarks Statistik — Hvor mange hedder...? (living-population name counts); dane.gov.pl — PESEL given names (first + second name position, 2026-01-20); dane.gov.pl — PESEL living persons (names). 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)

Thoai is also recorded as 5 other names, grouped separately because the records behind them do not connect to the one described above.

  • English given name7 spellings in the group

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

    Languages: English, German, Dutch

    Also written Thoại, Thoải

  • a separate name3 spellings in the group

    Also written Thoại, Thoaï

  • Spanish given name5 spellings in the group

    Most recorded in United States, El Salvador, Chile, Brazil

    Languages: Spanish, Portuguese

    Also written Thoại, Thọai

  • French given name6 spellings in the group

    Most recorded in France, Canada

    Also written Thoaï, Thoaĩ, Thọai, Thoài, Thoại

  • a separate name3 spellings in the group

    Also written Thoại

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)

Thoai 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 jaz, to carry on the back

    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.

How to address them(machine-generated)

InformalChào anh Thoai,Hi Thoai, (English)

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)

Attested in 12 sources across 9 countries.

Official registers attesting Thoai
CountryRegisterYearCountRank
US United StatesCensus Bureau — First Name Frequency 2020 by sex2020375#20,273
US United StatesCensus Bureau — First Name Frequency 2020 by sex2020136#20,273
SE SwedenSkatteverket — Sök hur många som har ett visst namn (living population)—27#20,389
FI FinlandDVV — Nimipalvelu (Finnish name service, per-name lookup)—25#19,729
FI FinlandDVV — Nimipalvelu (Finnish name service, per-name lookup)—25#18,908
SE SwedenSCB — Namnstatistik (to 2023)200610—
SE SwedenSCB — Namnstatistik (to 2023)200510—
SE SwedenSCB — Namnstatistik (to 2023)200410—
SE SwedenSCB — Namnstatistik (to 2023)200110—
FI FinlandDVV — Etunimitilasto (Finnish given names register)—5—
PL Polanddane.gov.pl — PESEL living persons (names)—3#22,923
PL Polanddane.gov.pl — PESEL given names (first + second name position, 2026-01-20)20263#29,065

Register rows as of the 2026-10-09 data build.

Frequently asked questions

How do you pronounce Thoai?
A machine transcription gives /tʰwaː˨˥j/ (IPA) for Vietnamese.
Is Thoai a male or female name?
Thoai is a male name in our records. Opposite-gender entries fall within the cross-gender noise we measure in the source data, so we don't report them as usage.
In which country does Thoai have the most bearers?
In the United States, the national register counted about 511 people named Thoai, more than in any other country we hold, where it is most often spelled thoai.
Where is Thoai most common?
Measured as a share of residents rather than as a count, Thoai is densest in Sweden — about 1 in 378 thousand people — even though United States holds more of our records for it.
How common is the name Thoai?
In the United States, the national register counted 511 people named Thoai in 2020, about 1 in 651 thousand residents.

What do you want to know about Thoai?

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

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, “Thoai”. Data snapshot 2026-10-10.

See how Thoai parses inside a full name →