Tadêu
given name · Latin script
Recorded as a male name· opposite-gender records fall within measured source noise
Tadêu is a male given name written in the Latin script, with more bearers in Brazil than in any other country. Recorded meaning: From Latin Thaddaeus, from Ancient Greek Θαδδαῖος (Thaddaîos), from Aramaic תַדַּי (Ṯaday), of uncertain origin.
- BRBrazil1 in 11K(measured from records)
- USUnited States≈1 in 3M
- AOAngola≈1 in 33K
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.
- Brazil (measured from records)
- Record sources
- 167 (measured from records)
- 1 in 11K (inferred from the name graph)
18,976 people, 2022
corpus datasets behind its best-documented spelling
strongest: highest-authority source
Brazil
measured from records inferred from the name graph
Spellings & scripts
(measured from records)One other spelling is counted as the same name:
Locally spelled Tadeu in BR Brazil, US United States, PT Portugal 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)- LatinThaddaeus(measured from records)
- Ancient GreekΘαδδαῖοςThaddaîos(measured from records)
- AramaicתַדַּיṮaday(measured from records)
From Latin Thaddaeus, from Ancient Greek Θαδδαῖος (Thaddaîos), from Aramaic תַדַּי (Ṯaday), of uncertain origin.
Cited for this meaning 2
- Wiktionary
- Dictionar Onomastic Rominesc
Attested across 22 languages in the etymology graph.
Where in the world
(measured from records)Tadêu 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 | ||||
|---|---|---|---|---|---|---|
| BR Brazil | #443 | 18,976 | 1 in 11K | 24K | Tadeu | 167 |
| AO Angola | #735 | ≈980 est. | ≈1 in 33K | — | Tadeu | 14 |
| PT Portugal | — | ≈160 est. | ≈1 in 65K | listed | Tadeu | 47 |
| US United States | — | ≈110 est. | ≈1 in 3M | — | Tadeu | 86 |
| GB United Kingdom | — | ≈29 est. | ≈1 in 2.3M | — | Tadeu | 32 |
| NZ New Zealand | — | ≈18 est. | ≈1 in 277K | — | Tadeu | 4 |
| IS Iceland | — | 1 | 1 in 351K | 1 | — | — |
18,976 people counted by IBGE — names by decade (Kaggle mirror), 2022. 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: IBGE — names by decade (Kaggle mirror); IBGE — Nomes (census name API); 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).
Evidence
(measured from records)No register attests this spelling yet
Frequently asked questions
- What does the name Tadêu mean, and where does it come from?
- From Latin Thaddaeus, from Ancient Greek Θαδδαῖος (Thaddaîos), from Aramaic תַדַּי (Ṯaday), of uncertain origin. Recorded by Wiktionary and Dictionar Onomastic Rominesc.
- Is Tadêu a male or female name?
- Tadêu 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 Tadêu have the most bearers?
- In Brazil, the national register counted about 19 thousand people named Tadêu, more than in any other country we hold, where it is most often spelled tadeu.
- Where is Tadêu most common?
- Tadêu is densest in Brazil, where the national register counts about 1 in 11 thousand people carrying it.
- How common is the name Tadêu?
- In Brazil, the national register counted 18,976 people named Tadêu in 2022, about 1 in 11 thousand residents.
- How common is Tadêu compared with other names?
- In Brazil, Tadêu is the 443rd most common given name of 474,894 given names recorded there.
What do you want to know about Tadêu?
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/tad%C3%AAuThe 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, “Tadêu” — the 443rd most common given name in Brazil. Data snapshot 2026-10-13.