Guiu

surname · Latin script

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

Guiu is a surname written in the Latin script, with more bearers in Spain than in any other country. Recorded meaning: a male given name, equivalent to English Guy.

rarermore common
  • ESSpain1 in 28K(measured from records)
  • ADAndorra≈1 in 13K
  • RORomania≈1 in 60K

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.

Spain (measured from records)

1,774 people

Sources
106 (measured from records)

Highest-authority source

≈1 in 13K (inferred from the name graph)

Andorra, est.

measured from records inferred from the name graph

Name dossier (print, CSV)

Meaning & origin(measured from records)

a male given name, equivalent to English Guy

Sources 1

  • kaikki.org Wiktionary extract (IPA + transliterations)

Where in the world(measured from records)

Guiu 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 Guiu is recorded, by country
CountryMost common spellingSources
ES Spain—1,7741 in 28K1.8KGuiu106
RO Romania—≈350 est.≈1 in 60K—Guiu10
FR France—≈180 est.≈1 in 379K8Guiu102
US United States—≈48 est.≈1 in 6.9MlistedGuiu27
BR Brazil—331 in 6.4M33——
CH Switzerland—91 in 934K9—1
AD Andorra#519≈6 est.≈1 in 13K—Guiu5

1,774 people counted by INE — Padrón per-token widgets (current living counts, given + apellidos). 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: INE — Padrón per-token widgets (current living counts, given + apellidos); INE — Apellidos más frecuentes (Padrón Municipal); INSEE — Fichier des noms de famille (1891–2000); IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname); BFS — Familiennamen der Wohnbevölkerung (surnames). 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 names spelled this way(inferred from the name graph)

Guiu is also recorded as 4 other names, grouped separately because the records behind them do not connect to the one described above.

  • English surname4 spellings in the group

    Most recorded in United States, Spain, Germany, United Kingdom

    Languages: English, German, Dutch

    Also written Guíu

  • Portuguese surname3 spellings in the group

    Most recorded in Spain, Brazil, United States

    Also written Guíu, Guiú

  • a separate name3 spellings in the group

    Also written Guíu, Guiú

  • Italian surname2 spellings in the group

    Most recorded in Spain, Italy

    Also written Guíu

30 further groups record this spelling and are not listed here.

Grouping is the name graph's, not a register's: two spellings join a group when the evidence links them, so a group is a claim about the records rather than about the people.

Other recorded senses(measured from records)

Guiu is also recorded in one other lexicon, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.

  • In kmb, Praia

    as a wordDiccionario Portuguez-Kimbundu

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)

18501900195020002050Eusebi Guiteras i Guiu, b. 1861Ernest Guiu, b. 1876Josep Bartolí, b. 1910Jean Guiu, b. 1910Josep Maria Casals i Guiu, b. 1941Antoni Garrell i Guiu, b. 1953Elisenda Guiu, b. 1974Marc Guiu Paz, b. 2006

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).

Evidence(measured from records)

Attested in 14 sources across 10 countries.

Official registers attesting Guiu
CountryRegisterYearCountRank
ES SpainINE — Padrón per-token widgets (current living counts, given + apellidos)—753#3,489
ES SpainINE — Nombres más frecuentes (Padrón Municipal)—639#1,757

Reference works 2

  • Wikidata name items (native-script + romanized given/family names)
  • jeantosti.com — Dictionnaire des noms de famille de France et d'ailleurs (Jean Tosti)

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 Guiu mean, and where does it come from?
a male given name, equivalent to English Guy Recorded by kaikki.org Wiktionary extract (IPA + transliterations).
In which country does Guiu have the most bearers?
In Spain, the national register counted about 1.8 thousand people named Guiu, more than in any other country we hold, where it is most often spelled guiu.
How common is the name Guiu?
In Spain, the national register counted 1,774 people named Guiu, about 1 in 28 thousand residents.
How common is Guiu compared with other names?
In Andorra, Guiu is the 519th most common surname of 755 surnames recorded there.

What do you want to know about Guiu?

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Query this name via API
curl https://api.mondonomo.ai/api/v1/name-graph/guiu

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, “Guiu” — the 519th most common surname in Andorra. Data snapshot 2026-10-10.

See how Guiu parses inside a full name →