Joaô

surname · Latin script

Recorded as a male name· opposite-gender records fall within measured source noise

Joaô is a surname written in the Latin script, with more bearers in Brazil than in any other country. In Luxembourg it is the 33rd most common given name. Recorded meaning: Borrowed from Portuguese João. Doublet of John.

rarermore common
  • BRBrazil1 in 62(measured from records)
  • ISIceland1 in 3.8K
  • ECEcuador1 in 4.8K

carrying the name, as counted by each country's national register. One hue, darker where it is more common; hover a country for its figure.

Brazil (measured from records)

3,430,608 people, 2022

Sources
278 (measured from records)

Highest-authority source

1 in 62 (inferred from the name graph)

Brazil

measured from records inferred from the name graph

Name dossier (print, CSV)

Spellings & scripts(measured from records)

2 other spellings are counted as the same name:

Locally spelled Joao in BR Brazil, US United States, LU Luxembourg and João in ES Spain.

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)

Borrowed from Portuguese João. Doublet of John.

Sources 2

Attested across 25 languages in the etymology graph.

Where in the world(measured from records)

Joaô 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 Joaô is recorded, by country
CountryMost common spellingSources
BR Brazil—3,430,6081 in 623.4MJoao4
US United States—8,8431 in 38K8.8KJoao41
EC Ecuador—3,5151 in 4.8K3.5K—5
ES Spain—8951 in 56K895João21
PL Poland—4041 in 95K404——
NO Norway—2941 in 19K664—2
IS Iceland—921 in 3.8K92——
LU Luxembourg#33———Joao11

3,430,608 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); Census Bureau — First Name Frequency 2020 by sex; INEC — civil registry names; INE — Padrón per-token widgets (current living counts, given + apellidos); SSB PxWebApi — Persons/Last names by year (StatBank tables 10501/12891); SSB — Navnesøk (name-search service, living population); dane.gov.pl — PESEL given names (first + second name position, 2026-01-20); 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

None of the official registers or reference works in our corpus lists Joaô 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 Joaô mean, and where does it come from?
Borrowed from Portuguese João. Doublet of John. Recorded by Wiktionary and Nordic Names.
In which country does Joaô have the most bearers?
In Brazil, the national register counted about 3.4 million people named Joaô, more than in any other country we hold, where it is most often spelled joao.
Where is Joaô most common?
Joaô is densest in Brazil, where the national register counts about 1 in 62 people carrying it.
How common is the name Joaô?
In Brazil, the national register counted 3,430,608 people named Joaô in 2022, about 1 in 62 residents.
How common is Joaô compared with other names?
In Luxembourg, Joaô is the 33rd most common given name of 521 given names recorded there.

What do you want to know about Joaô?

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Query this name via API
curl https://api.mondonomo.ai/api/v1/name-graph/joa%C3%B4

The same payload this page is built from: spellings and scripts, countries and languages, related names, and the registers that attest the form. Rate-limited for casual use; a free API key gives 1,000 requests a day, and bulk access is licensed separately.

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, “Joaô” — the 33rd most common given name in Luxembourg. Data snapshot 2026-10-10.

See how Joaô parses inside a full name →