Khải
given name · Latin script
Meaning: Hán-Việt: mở ra, khai mở; cũng là khải hoàn
Recorded as a male name· opposite-gender records fall within measured source noise
(measured from records)Officially recorded in 2 countries
/kʰaːj˧˨/(recorded in a dictionary) Vietnamese · from Wiktionary
Khải is a male given name written in the Latin script, with more bearers in the United States than in any other country.
- USUnited States1 in 86K(measured from records)
- SESweden1 in 116K
- ISIceland1 in 175K
carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). Countries with no figure are shown too: flat where a national register lists the name without counting it, hatched where only our records hold it. One hue, darker where it is more common; hover a country for its figure.
- United States (measured from records)
- Record sources
- 109 (measured from records)
- 1 in 86K (inferred from the name graph)
3,860 people, 2020
corpus datasets behind its best-documented spelling
strongest: highest-authority source
United States
measured from records inferred from the name graph
Spellings & scripts
(measured from records)One other spelling is counted as the same name:
Locally spelled Khai in US United States, NL Netherlands.
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)Hán-Việt: mở ra, khai mở; cũng là khải hoàn.
Cited for this meaning 1
- Tên Họ Người Việt Nam
Attested across 15 languages in the etymology graph.
Where in the world
(measured from records)Khải 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 | |||
|---|---|---|---|---|---|
| US United States | 3,860 | 1 in 86K | 3.4K | Khai | 109 |
| SE Sweden | 88 | 1 in 116K | 88 | — | 4 |
| NL Netherlands | 38 | 1 in 455K | 38 | Khai | 6 |
| FI Finland | 19 | 1 in 293K | 102 | — | 3 |
| DK Denmark | 19 | 1 in 309K | 19 | — | 1 |
| IS Iceland | 2 | 1 in 175K | 2 | — | — |
3,860 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; DVV — Etunimitilasto (Finnish given names register); DVV — Nimipalvelu (Finnish name service, per-name lookup); Skatteverket — Sök hur många som har ett visst namn (living population); Meertens NVB — Nederlandse Voornamenbank (all-time BRP bearer counts, 2018); Danmarks Statistik — Hvor mange hedder...? (living-population name counts); Þjóðskrá Íslands — Name frequencies (NafnTíðni, registry). 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)Khải is also recorded in 3 other lexicons, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.
In Vietnamese, Han-Viet name element; from the naming poem for Quảng Oai công, Gia Long’s 10th son.
as a nameTên Họ Người Việt Nam
In Vietnamese, Hán-Việt; tên chúa Trịnh, cùng bộ mộc.
as a nameTên Họ Người Việt Nam
In nut, to sell
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)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)No register attests this spelling yet
Register rows as of the 2026-10-09 data build.
Frequently asked questions
- What does the name Khải mean?
- Recorded meaning: Hán-Việt: mở ra, khai mở; cũng là khải hoàn.
- How do you pronounce Khải?
- In Vietnamese /kʰaːj˧˨/ (Wiktionary).
- Is Khải a male or female name?
- Khải 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 Khải have the most bearers?
- In the United States, the national register counted about 3.9 thousand people named Khải, more than in any other country we hold, where it is most often spelled khai.
- Where is Khải most common?
- Khải is densest in the United States, where the national register counts about 1 in 86 thousand people carrying it.
- How common is the name Khải?
- In the United States, the national register counted 3,860 people named Khải in 2020, about 1 in 86 thousand residents.
What do you want to know about Khải?
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/kh%E1%BA%A3iThe 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, “Khải”. Data snapshot 2026-10-13.