Guillem
given name · Latin script
Meaning: a male given name, equivalent to English William
Recorded as a male name· opposite-gender records fall within measured source noise
/giʎem/(machine-generated) pronunciation, model-generated
Guillem is a given name written in the Latin script, with more bearers in Spain than in any other country.
- ESSpain1 in 3.2K(measured from records)
- ADAndorra≈1 in 2.4K
- EEEstonia≈1 in 70K
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)
- Sources
- 172 (measured from records)
- ≈1 in 2.4K (inferred from the name graph)
15,685 people
Highest-authority source
Andorra, est.
measured from records inferred from the name graph
Meaning & origin(measured from records)
a male given name, equivalent to English William
Sources 1
- kaikki.org Wiktionary extract (IPA + transliterations)
Attested across 14 languages in the etymology graph.
Where in the world(measured from records)
Guillem 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 | ||||
|---|---|---|---|---|---|---|
| ES Spain | #441 | 15,685 | 1 in 3.2K | 16K | Guillem | 172 |
| FR France | — | ≈760 est. | ≈1 in 89K | 765 | Guillem | 2 |
| US United States | — | ≈94 est. | ≈1 in 3.5M | 197 | Guillem | 73 |
| GB United Kingdom | — | ≈47 est. | ≈1 in 1.4M | — | Guillem | 34 |
| AD Andorra | #186 | ≈33 est. | ≈1 in 2.4K | — | Guillem | 19 |
| EE Estonia | — | ≈17 est. | ≈1 in 70K | listed | — | 2 |
| IS Iceland | — | 3 | 1 in 117K | 3 | — | — |
15,685 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); INSEE — Fichier des prénoms (1900–2024); Census Bureau — Surname Frequency 2020; 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)
Guillem 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.
Catalan form of WILLIAM .
as a word
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)
- William VII the Young of Auvergneb. 1130FRnot in their usual nameFrench noble
- William I de la Rocheb. 1300not in their usual nameDuke of Athens
- Guillem Sagrerab. 1380ESSpanish artist
- Guillem Balaguéb. 1968ESSpanish journalist
- Guillem Moralesb. 1975ESSpanish film director
- Guillem Anglada Escudéb. 1979ESprofessor of astrophysics at the University of London
- Guillem Bauzàb. 1984ESfootballer
- Guillem Vivesb. 1993ESSpanish basketball player (born 1993)
- Guillem Jaimeb. 1999ESSpanish footballer
- Guillem Molinab. 2000ESSpanish footballer
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).
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)
Attested in 35 sources across 20 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| ES Spain | INE — Apellidos más frecuentes (Padrón Municipal) | — | 3.2K | #1,620 |
| ES Spain | INE — Padrón per-token widgets (current living counts, given + apellidos) | — | 3.2K | #1,620 |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1961 | 199 | — |
| US United States | Census Bureau — Surname Frequency 2020 | 2020 | 197 | #98,501 |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1981 | 165 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1991 | 151 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1971 | 149 | — |
| US United States | Census Bureau — Surname Frequency 2010 | 2010 | 111 | #148,347 |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1951 | 86 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1941 | 64 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1921 | 58 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1931 | 50 | — |
Reference works 4
- Wikipedia given-name tokens
- Wikipedia surname tokens
- 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 Guillem mean, and where does it come from?
- a male given name, equivalent to English William Recorded by kaikki.org Wiktionary extract (IPA + transliterations).
- Is Guillem a male or female name?
- Guillem 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.
- How do you pronounce Guillem?
- A machine transcription gives /giʎem/ (IPA) for Spanish.
- What are other forms of the name Guillem?
- In the etymology graph, William, Guillermo and Willie are forms of the same name in other languages.
- In which country does Guillem have the most bearers?
- In Spain, the national register counted about 16 thousand people named Guillem, more than in any other country we hold, where it is most often spelled guillem.
- How common is the name Guillem?
- In Spain, the national register counted 15,685 people named Guillem, about 1 in 3.2 thousand residents.
- How common is Guillem compared with other names?
- In Spain, Guillem is the 441st most common given name of 135,644 given names recorded there.
What do you want to know about Guillem?
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/guillemThe 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, “Guillem” — the 441st most common given name in Spain. Data snapshot 2026-10-10.