Guillerm
surname · Latin script
Recorded as a male name· opposite-gender records fall within measured source noise
/ɟilɛʁm/(machine-generated) pronunciation, model-generated
Guillerm is a surname written in the Latin script, with more bearers in France than in any other country.
- FRFrance≈1 in 23K(inferred from the name graph)
- EEEstonia≈1 in 701K
- CHSwitzerland1 in 840K
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.
- France (inferred from the name graph)
- Sources
- 220 (measured from records)
- ≈1 in 23K (inferred from the name graph)
≈3,000 people, est.
Highest-authority source
France, est.
measured from records inferred from the name graph
Meaning & origin
No verified etymology recorded for this name yet — the entries below are drawn from usage statistics and the name graph.
Where in the world(measured from records)
Guillerm 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 | |||
|---|---|---|---|---|---|
| FR France | ≈3,000 est. | ≈1 in 23K | 337 | Guillerm | 220 |
| US United States | ≈140 est. | ≈1 in 2.3M | listed | Guillerm | 37 |
| CA Canada | ≈20 est. | ≈1 in 1.9M | — | Guillerm | 12 |
| GB United Kingdom | ≈15 est. | ≈1 in 4.4M | — | Guillerm | 2 |
| BE Belgium | 13 | 1 in 902K | 13 | Guillerm | 7 |
| CH Switzerland | 10 | 1 in 840K | 10 | Guillerm | 4 |
| EE Estonia | ≈2 est. | ≈1 in 701K | listed | — | 1 |
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: INSEE — Fichier des noms de famille (1891–2000); the us-wru-surnames-voterfile register; Familienaam.be — Belgian family-name frequency (population register); 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).
Notable people with this name(measured from records)
- Henri Guillermb. 1872FRFrench priest and organist (1872-1932)
- Alain Guillermb. 1944FRFrench historian (1944-2005)
- Yves Guillermb. 1950FRFrench politician
- Luc-Christophe Guillermb. 1962FRFrench psychiatrist
- Elisabeth Guillermb. 1965FRFrench politician
- Françoise Guillermb. 1965FRFrench politician
- Carole Guillermb. 1987FRFrench politician
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)
Evidence(measured from records)
Attested in 12 sources across 9 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1951 | 518 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1961 | 516 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1931 | 492 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1971 | 457 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1941 | 439 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1921 | 432 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1981 | 404 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1901 | 343 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1991 | 337 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1911 | 281 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1891 | 200 | — |
| BE Belgium | Familienaam.be — Belgian family-name frequency (population register) | 2008 | 13 | #61,786 |
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
- How do you pronounce Guillerm?
- A machine transcription gives /ɟilɛʁm/ (IPA) for French.
- In which country does Guillerm have the most bearers?
- Mondonomo estimates about 3.0 thousand people named Guillerm in France, more than in any other country we hold, where it is most often spelled guillerm.
- How common is the name Guillerm?
- In Belgium, the national register counted 13 people named Guillerm in 2008, about 1 in 902 thousand residents.
What do you want to know about Guillerm?
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/guillermThe 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, “Guillerm”. Data snapshot 2026-10-10.