Dấu

given name · Latin script

Meaning: mark, sign

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

Dấu is a given name used for both men and women, written in the Latin script, with more bearers in Vietnam than in any other country, where it is the 94th most common surname.

rarermore common
  • VNVietnam≈1 in 3.5K(inferred from the name graph)
  • PGPapua New Guinea≈1 in 32K
  • DKDenmark1 in 59K

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.

Vietnam (inferred from the name graph)

≈28,000 people, est.

Record sources
97 (measured from records)

corpus datasets behind its best-documented spelling

strongest: highest-authority source

≈1 in 3.5K (inferred from the name graph)

Vietnam, est.

measured from records inferred from the name graph

Name dossier (print, CSV)

Spellings & scripts

(measured from records)

3 other spellings are counted as the same name:

Locally spelled Dau in VN Vietnam, US United States, ZA South Africa and 1 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)

mark, sign

Cited for this meaning 1

  • kaikki.org Wiktionary extract (IPA + transliterations)

Attested across 22 languages in the etymology graph.

Where in the world

(measured from records)

Dấu 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 Dấu is recorded, by country
CountryMost common spellingSources
VN Vietnam#94≈28,000 est.≈1 in 3.5K—Dau97
NG Nigeria—≈2,200 est.≈1 in 98K—Dau4
US United States—1,5041 in 221K1.9KDau59
SD Sudan—≈650 est.≈1 in 70K1——
ZA South Africa—≈640 est.≈1 in 89K—Dau2
PG Papua New Guinea—≈220 est.≈1 in 32K12——
DK Denmark—1001 in 59K100——
UY Uruguay—491 in 69K49——
IS Iceland—≈5 est.≈1 in 65K2——

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 2020; Danmarks Statistik — Hvor mange hedder...? (living-population name counts); INE Uruguay — Apellidos más frecuentes 1902–2024 (Tableau Public); PNG Election Results Database — candidate names (1972–2022); Þjóðskrá Íslands — Name frequencies (NafnTíðni, registry); Wikidata humans by citizenship — given & family 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)

Dấu is also recorded as 7 other names, grouped separately because the records behind them do not connect to the one described above.

  • a separate surname24 spellings in the group

    Most recorded in India, United States, United Kingdom, Ecuador

    Also written Dau, Ďâu, Dău, Dẫu, Dậư

  • a separate name8 spellings in the group

    Also written Dau, Dậu, Dẩu, Dâu, Dầu

  • Spanish surname20 spellings in the group

    Most recorded in Brazil, United States, Argentina, Colombia

    Languages: Spanish, Portuguese

    Also written Dau, Daú, Daü, Dậu, Dầu

  • a separate name6 spellings in the group

    Also written Dầu, Dâu, Dẩu, Dậu, Dau

  • Danish surname12 spellings in the group

    Most recorded in Denmark, United States, Sweden, Iceland

    Languages: Danish, Norwegian, Swedish

    Also written Dau, Dâu, Dầu

  • Italian surname4 spellings in the group

    Most recorded in Italy, United States

    Also written Dau, Dầu, Dâu

  • Thai surname17 spellings in the group

    Most recorded in Thailand, United States, Laos, India

    Languages: Thai, Lao

    Also written ดาอี, Dau, ดาอ, ดาอู, ด่าอี

7 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)
  • Dou Shanfub. 684not in their usual nameTang dynasty person CBDB = 140798
  • Dou Binnot in their usual nameQing dynasty person CBDB=59159
  • Dou Wennot in their usual nameTang dynasty person CBDB = 153218
  • Dou Suinot in their usual nameTang dynasty person CBDB = 153219
  • Dou Shinot in their usual namemother of Gaodahua
  • Dou Daitiannot in their usual nameperson, CBDB ID = 425005

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)

No register attests this spelling yet

None of the official registers or reference works in our corpus lists Dấu under this spelling. The statistics on this page rest on person records, and the related names are inferred from the name graph.

Frequently asked questions

What does the name Dấu mean, and where does it come from?
mark, sign Recorded by kaikki.org Wiktionary extract (IPA + transliterations).
Is Dấu a male or female name?
Dấu 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 Dấu have the most bearers?
Mondonomo estimates about 28 thousand people named Dấu in Vietnam, more than in any other country we hold, where it is most often spelled dau.
How common is the name Dấu?
In the United States, the national register counted 1,504 people named Dấu in 2010, about 1 in 221 thousand residents.
How common is Dấu compared with other names?
In Vietnam, Dấu is the 94th most common surname of 62,915 surnames recorded there.

What do you want to know about Dấu?

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/d%E1%BA%A5u

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, “Dấu” — the 94th most common surname in Vietnam. Data snapshot 2026-10-13.

See how Dấu parses inside a full name →