Hai
given name · Latin script
Meaning: Vietnamese numeral ‘two’; used here as a simple personal name, often marking birth order among siblings
Recorded as a male name· opposite-gender records fall within measured source noise
/haj˧˧/(machine-generated) pronunciation, model-generated
Hai is a given name written in the Latin script, with more bearers in Vietnam than in any other country, where it is the 16th most common given name.
- VNVietnam≈1 in 184(inferred from the name graph)
- CNChina≈1 in 4.5K
- USUnited States1 in 29K
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 Hai 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)
- #769 (measured from records)
- 5 (measured from records)
- Sources
- 263 (measured from records)
- ≈1 in 184 (inferred from the name graph)
≈540,000 people, est.
of 15M given names
recorded for this name
Highest-authority source
Vietnam, est.
measured from records inferred from the name graph
Spellings & scripts(measured from records)
Locally spelled Haji in PK Pakistan, TZ Tanzania and Hacı in TR Türkiye.
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)
Vietnamese numeral ‘two’; used here as a simple personal name, often marking birth order among siblings.
Sources 1
- Tên Họ Người Việt Nam
Attested across 24 languages in the etymology graph.
Where in the world(measured from records)
Hai 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.
| Country | Most common spelling | Sources | ||||
|---|---|---|---|---|---|---|
| VN Vietnam | #16 | ≈540,000 est. | ≈1 in 184 | listed | Hai | 241 |
| PK Pakistan | — | ≈340,000 est. | ≈1 in 694 | listed | Haji | 66 |
| CN China | — | ≈310,000 est. | ≈1 in 4.5K | — | Hai | 125 |
| TZ Tanzania | — | ≈84,000 est. | ≈1 in 699 | 32 | Haji | 33 |
| TR Türkiye | #65 | ≈79,000 est. | ≈1 in 1K | — | Hacı | 78 |
| US United States | — | 11,511 | 1 in 29K | 13K | Hai | 263 |
| AL Albania | — | 2,215as Haxhi | 1 in 1.4K | 2.2K | — | — |
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; Census Bureau — Surname Frequency 2000; INEC Special Gazette 2021 — 2020 parliamentary election results; INSTAT Albania — Search the name (given-name counts). 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 recorded senses(measured from records)
Hai is also recorded in 5 other lexicons, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.
In Vietnamese, second; second-born child
as a nameVietnamese Personal Names (CIA Foreign Names Studies, ch. 37)
In Vietnamese, number two
as a nameVietnamese Personal Names (CIA Foreign Names Studies, ch. 37)
In German, Fremdname; nicht einbezogen in die Hüter-Namen.
as a nameDeutscher Familiennamenatlas, Band 5: Familiennamen nach Beruf und persönlichen Merkmalen
Alive.
as a nameThe African book of names
In cdo, your chin gapes and drops, as said to a mendacious person
as a wordDictionary of the Foochow Dialect
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)
- Qian Haiyueb. 1901CNnot in their usual nameChinese historian
- Xian Xinghaib. 1905CNnot in their usual nameChinese composer (1905–1945)
- Wang Haib. 1926CNChinese air force general (1926-2020)
- Fan Haifub. 1933CNnot in their usual nameChinese physicist
- Haidi Zhangb. 1955CNnot in their usual nameChinese writer, politician with physical disability
- Lương Mạnh Hảib. 1981VNactor
- Nguyễn Hải Phongb. 1982VNVietnamese songwriter, singer, composer and record producer (born 1982)
- Quế Ngọc Hảib. 1993VNfootballer
- Lee Hib. 1996KRnot in their usual nameSouth Korean singer
- Nguyễn Quang Hảib. 1997VNVietnamese footballer (born 1997)
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)
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 66 sources across 32 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| US United States | Census Bureau — First Name Frequency 2020 by sex | 2020 | 9.2K | #2,261 |
| US United States | Census Bureau — First Name Frequency 2020 by sex | 2020 | 2.3K | #2,261 |
| US United States | SSA — National Baby Names (1880–present) | 2015 | 8 | — |
| US United States | SSA — National Baby Names (1880–present) | 1984 | 8 | — |
Reference works 5
- Dictionary of American Family Names
- The Oxford Dictionary of Family Names in Britain and Ireland
- Nederlandse FamilienamenBank (Dutch surname bank; ex-Meertens Instituut, now CBG)2007
- Wikipedia given-name 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 Hai mean, and where does it come from?
- Vietnamese numeral ‘two’; used here as a simple personal name, often marking birth order among siblings. Recorded by Tên Họ Người Việt Nam.
- Is Hai a male or female name?
- Hai 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.
- How do you pronounce Hai?
- A machine transcription gives /haj˧˧/ (IPA) for Vietnamese.
- In which country does Hai have the most bearers?
- Mondonomo estimates about 536 thousand people named Hai in Vietnam, more than in any other country we hold, where it is most often spelled hai.
- How common is the name Hai?
- In the United States, the national register counted 11,511 people named Hai in 2020, about 1 in 29 thousand residents.
- How common is Hai compared with other names?
- In Vietnam, Hai is the 16th most common given name of 73,918 given names recorded there.
What do you want to know about Hai?
Nobody replies to these one by one, but what readers ask decides what these pages answer next.
Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/haiThe 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, “Hai” — the 16th most common given name in Vietnam. Data snapshot 2026-10-10.