Thư

given name · Latin script

Meaning: letter

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

/tʰɨ˨˨/(machine-generated) pronunciation, model-generated

Thư is a given name written in the Latin script, with more bearers in Vietnam than in any other country, where it is the 9th most common given name.

rarermore common
  • VNVietnam≈1 in 117(inferred from the name graph)
  • USUnited States1 in 30K
  • GBUnited Kingdom≈1 in 31K

carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). Where a country counts another spelling of the name rather than Thư 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.

Vietnam (inferred from the name graph)

≈840,000 people, est.

2 (measured from records)

recorded for this name

Sources
230 (measured from records)

Highest-authority source

≈1 in 117 (inferred from the name graph)

Vietnam, est.

measured from records inferred from the name graph

Name dossier (print, CSV)

Spellings & scripts(measured from records)

ThưLatin(measured from records)
ริลาThai(measured from records)

3 other spellings are counted as the same name:

Locally spelled Thu in VN Vietnam, US United States, GB United Kingdom and 3 more.

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)

letter

Sources 1

  • kaikki.org Wiktionary extract (IPA + transliterations)

Attested across 20 languages in the etymology graph.

Where in the world(measured from records)

Thư 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 Thư is recorded, by country
CountryMost common spellingSources
VN Vietnam#9≈840,000 est.≈1 in 117listedThu230
US United States—11,1511 in 30K14KThu173
AO Angola#552≈8,200 est.≈1 in 3.9K—Thu3
PE Peru—≈3,000 est.≈1 in 11K—Thu7
GB United Kingdom—≈2,100 est.≈1 in 31K41Thu36
SG Singapore—≈570 est.≈1 in 11K—Thu21
GY Guyana—175as La1 in 4.3K175——

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: the vn-kaggle-given register; Census Bureau — First Name Frequency 2020 by sex; Census Bureau — Surname Frequency 2010; Surnames of England and Wales (taliesin-arlein.net, Sept 2002 electoral register); Guyana — Official List of Electors July 2025. 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)

Thư is also recorded as 6 other names, grouped separately because the records behind them do not connect to the one described above.

  • a separate given name44 spellings in the group

    Most recorded in United States, United Kingdom, Malaysia, China

    Also written Thu, Thủ, Thú, T̶h̶u̶, Thù

  • English given name58 spellings in the group

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

    Languages: English, German, Dutch

    Also written Thu, Thue, Thü, Thú, Thù

  • a separate name11 spellings in the group

    Also written Thu, Thù, Thụ, Ťhù, Thú

  • Hindi given name18 spellings in the group

    Most recorded in Peru, United States, India, Ecuador

    Languages: Hindi, Urdu

    Also written Thu, Thü, Thú, Thù, Thû

  • Spanish given name52 spellings in the group

    Most recorded in Peru, United States, Dominican Republic, Venezuela

    Languages: Spanish, Portuguese

    Also written Thu, Thú, Thü, Thù, T̶h̶u̶

  • Danish given name21 spellings in the group

    Most recorded in Denmark, Norway, United States, Sweden

    Languages: Danish, Norwegian, Swedish

    Also written Thu, Thú, Thù, Thứ, Thụ

36 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)

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)

InformalChào chị Thư,Hi Thư, (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 4 sources across 3 countries.

Official registers attesting Thư
CountryRegisterYearCountRank
VN VietnamVietnamese given names (Kaggle)———

Reference works 1

  • 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 Thư mean, and where does it come from?
letter Recorded by kaikki.org Wiktionary extract (IPA + transliterations).
How do you pronounce Thư?
A machine transcription gives /tʰɨ˨˨/ (IPA) for Vietnamese.
Is Thư a male or female name?
Thư is recorded for both men and women. We don't publish a percentage split: a record's gender belongs to the person and is attached to every given name on that record, so names in cultures where a name string also carries a parent's or spouse's given name pick up large cross-gender counts.
In which country does Thư have the most bearers?
Mondonomo estimates about 844 thousand people named Thư in Vietnam, more than in any other country we hold, where it is most often spelled thu.
How common is the name Thư?
In the United States, the national register counted 11,151 people named Thư in 2020, about 1 in 30 thousand residents.
How common is Thư compared with other names?
In Vietnam, Thư is the 9th most common given name of 73,918 given names recorded there.

What do you want to know about Thư?

Nobody replies to these one by one, but what readers ask decides what these pages answer next.

Please leave out anyone's personal details (see Privacy).

Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/th%C6%B0

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, “Thư” — the 9th most common given name in Vietnam. Data snapshot 2026-10-10.

See how Thư parses inside a full name →