Wäi
surname · Latin script
Wäi is a surname written in the Latin script, with more bearers in the United States than in any other country.
- THThailand≈1 in 248Kas เหว่ย(inferred from the name graph)
- BRBrazil1 in 42K
- INIndia1 in 640K
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 Wäi 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.
- United States (measured from records)
- 2 (measured from records)
- Sources
- 108 (measured from records)
- 1 in 42K (inferred from the name graph)
9,578 named Wei, 2010
recorded for this name
Highest-authority source
Brazil
measured from records inferred from the name graph
Spellings & scripts(measured from records)
18 other spellings are counted as the same name:
Locally spelled วย in TH Thailand, Vee in US United States, Wai in IN India and Wei in CN China.
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
No verified etymology recorded for this name yet — the entries below are drawn from usage statistics and the name graph.
Attested across 4 languages in the etymology graph.
Where in the world(measured from records)
Wäi 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 | — | 9,578as Wei | 1 in 35K | 15K | Vee | 68 |
| BR Brazil | — | 5,032 | 1 in 42K | 5K | — | — |
| CN China | — | ≈2,200 est. | ≈1 in 646K | — | Wei | 30 |
| IN India | — | 2,071 | 1 in 640K | 2.1K | Wai | 5 |
| ES Spain | — | 953as Wei | 1 in 52K | 953 | — | 2 |
| NO Norway | — | 370as Vee | 1 in 15K | 370 | — | 3 |
| TH Thailand | #108 | ≈280 est. | ≈1 in 248K | #598,151 | วย | 108 |
| FI Finland | — | 236as Wei | 1 in 24K | 321 | — | 1 |
| DK Denmark | — | 130as Wei | 1 in 45K | 130 | — | — |
9,578 people counted by Census Bureau — Surname Frequency 2010, 2010, counting the spelling wei. 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; IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname); Instate — India surnames (clean spellings) from electoral rolls; INE — Padrón per-token widgets (current living counts, given + apellidos); INE — Apellidos más frecuentes (Padrón Municipal); SSB — Navnesøk (name-search service, living population); DVV — Nimipalvelu (Finnish name service, per-name lookup); Danmarks Statistik — Hvor mange hedder...? (living-population 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).
Evidence(measured from records)
No register attests this spelling yet
Frequently asked questions
- In which country does Wäi have the most bearers?
- In the United States, the national register counted about 9.6 thousand people named Wei, more than in any other country we hold.
- Where is Wäi most common?
- Measured as a share of residents rather than as a count, Wäi is densest in Brazil — about 1 in 42 thousand people — even though United States holds more of our records for it.
- How common is the name Wäi?
- In Brazil, the national register counted 5,032 people named Wäi, about 1 in 42 thousand residents.
- How common is Wäi compared with other names?
- In Thailand, Wäi is the 108th most common surname of 1,135,150 surnames recorded there.
What do you want to know about Wäi?
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/w%C3%A4iThe 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, “Wäi” — the 108th most common surname in Thailand. Data snapshot 2026-10-10.