Decuyper
surname · Latin script
Recorded as a male name· opposite-gender records fall within measured source noise
Decuyper is a surname written in the Latin script, with more bearers in Belgium than in any other country.
- FRFrance≈1 in 152K(inferred from the name graph)
- BEBelgium1 in 5K
- NLNetherlands≈1 in 931K
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.
- Belgium (measured from records)
- Sources
- 134 (measured from records)
- 1 in 5.0K (inferred from the name graph)
2,359 people, 2008
Highest-authority source
Belgium
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)
Decuyper 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 | |||
|---|---|---|---|---|---|
| BE Belgium | 2,359 | 1 in 5K | 2.4K | Decuyper | 45 |
| FR France | ≈450 est. | ≈1 in 152K | 77 | Decuyper | 134 |
| US United States | ≈52 est. | ≈1 in 6.5M | listed | Decuyper | 60 |
| AR Argentina | 33 | 1 in 1.4M | 33 | — | — |
| ES Spain | 20 | 1 in 2.5M | 20 | Decuyper | 7 |
| NL Netherlands | ≈19 est. | ≈1 in 931K | — | Decuyper | 8 |
| CH Switzerland | 6 | 1 in 1.4M | 6 | — | 2 |
2,359 people counted by Familienaam.be — Belgian family-name frequency (population register), 2008, counting the spelling de cuyper. 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: Familienaam.be — Belgian family-name frequency (population register); INSEE — Fichier des noms de famille (1891–2000); the us-wru-surnames-voterfile register; RENAPER — Apellidos (person counts, national); INE — Padrón per-token widgets (current living counts, given + apellidos); INE — Apellidos más frecuentes (Padrón Municipal); 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)
- Alphonse Decuyperb. 1877FRFrench water polo player (1877-1937)
- Marcel Decuyperb. 1909FRFrench mathematician (1909-2000)
- Catherine Decuyperb. 1955FRFrench 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).
Evidence(measured from records)
Attested in 10 sources across 7 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| BE Belgium | Familienaam.be — Belgian family-name frequency (population register) | 2008 | 847 | #1,637 |
| BE Belgium | Statbel — Noms de famille (family names) | — | 794 | #1,768 |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1961 | 79 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1991 | 77 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1971 | 73 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1981 | 57 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1951 | 52 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1941 | 49 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1931 | 46 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1921 | 41 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1911 | 34 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1901 | 34 | — |
Reference works 2
- Nederlandse FamilienamenBank (Dutch surname bank; ex-Meertens Instituut, now CBG)2007
- Wikidata name items (native-script + romanized given/family names)
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
- In which country does Decuyper have the most bearers?
- In Belgium, the national register counted about 2.4 thousand people named Decuyper, more than in any other country we hold, where it is most often spelled decuyper.
- Where is Decuyper most common?
- Decuyper is densest in Belgium, where the national register counts about 1 in 5.0 thousand people carrying it.
- How common is the name Decuyper?
- In Belgium, the national register counted 2,359 people named Decuyper in 2008, about 1 in 5.0 thousand residents.
What do you want to know about Decuyper?
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/decuyperThe 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, “Decuyper”. Data snapshot 2026-10-10.