Lejeune
surname · Latin script
Meaning, in French: variant of Jeune (‘young’), with the definite article le. This name was also taken to Germany by Huguenot refugees. It is often translated as Young (Dictionary of American Family Names)
(measured from records)Officially recorded in 13 countries · latest register: Census Bureau, 2020
Lejeune is a surname written in the Latin script, with more bearers in France than in any other country. In Belgium it is the 18th most common surname.
- BEBelgium1 in 1.8K(measured from records)
- FRFrance≈1 in 3.9K
- NLNetherlands1 in 55K
carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). Countries with no figure are shown too: flat where a national register lists the name without counting it, hatched where only our records hold it. One hue, darker where it is more common; hover a country for its figure.
- France (inferred from the name graph)
- Record sources
- 285 (measured from records)
- 1 in 1.8K (inferred from the name graph)
≈18,000 people, est.
corpus datasets behind its best-documented spelling
strongest: highest-authority source
Belgium
measured from records inferred from the name graph
Meaning & origin
(measured from records)The young; originally used to distinguish the younger of two people with the same name.
Cited for this meaning 1
- Encyclopedia of surnames [the complete companion to tracing your names history]
Attested in 1 language in the etymology graph.
How Lejeune is read
(measured from records)Lejeune is one spelling over 2 language communities, and the dictionaries record it differently in 2 of them. Each row is what a source recorded for that language, beside the share of this name’s records the language holds. No single row is the name’s meaning.
- French62%
variant of Jeune (‘young’), with the definite article le. This name was also taken to Germany by Huguenot refugees. It is often translated as Young.
as a nameDictionary of American Family Names
de le jeune, surnom pour distinguer le fils du père ou le plus jeune des frères
as a nameDictionnaire des noms de famille du Canada français. Anthroponymie et généalogie. 2e édition
- English31%
The young; originally used to distinguish the younger of two people with the same name.
as a nameEncyclopedia of surnames [the complete companion to tracing your names history]
The share is ours — how much of this name’s records each language holds. The sense beside it is the source’s, quoted and credited, including where it names a gender. We do not publish a gender of our own per language: our records carry one figure for the spelling as a whole.
Where the surname Lejeune is found
(measured from records)Lejeune 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 | #191 | ≈18,000 est. | ≈1 in 3.9K | 2K | Lejeune | 285 |
| BE Belgium | #18 | 6,564 | 1 in 1.8K | 6.6K | Lejeune | 117 |
| US United States | — | 5,544 | 1 in 60K | 5.5K | Lejeune | 207 |
| GN Guinea | #91 | ≈1,700 est. | ≈1 in 8.5K | — | Lejeune | 1 |
| CA Canada | — | ≈600 est. | ≈1 in 69K | — | Lejeune | 72 |
| NL Netherlands | — | 315 | 1 in 55K | 315 | Lejeune | 27 |
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); Familienaam.be — Belgian family-name frequency (population register); Census Bureau — Surname Frequency 2010; CBG Familienamenbank — Dutch surname bearer counts (GBA/BRP 2007). 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)- Louis-François, Baron Lejeuneb. 1775FRFrench general, painter, and lithographer (1775-1848)
- Jérôme Lejeuneb. 1926FRFrench pediatrician and geneticist (1926–1994)
- Florian Lejeuneb. 1991FRFrench footballer (born 1991)
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)28 registers and reference works attest this spelling, across 13 countries.
Register rows as of the 2026-10-09 data build.
Frequently asked questions
- Where does the name Lejeune come from?
- The young; originally used to distinguish the younger of two people with the same name. Recorded by Encyclopedia of surnames [the complete companion to tracing your names history].
- What does the name Lejeune mean?
- In French, variant of Jeune (‘young’), with the definite article le. This name was also taken to Germany by Huguenot refugees. It is often translated as Young.
- Which countries have the most people with the surname Lejeune?
- Mondonomo estimates about 18 thousand people named Lejeune in France, more than in any other country we hold, where it is most often spelled lejeune. After it come Belgium, United States, Guinea and Canada; the country table on this page ranks them.
- Where is Lejeune most common?
- Measured as a share of residents rather than as a count, Lejeune is densest in Belgium — about 1 in 1.8 thousand people — even though France holds more of our records for it.
- How common is the name Lejeune?
- In Belgium, the national register counted 6,564 people named Lejeune in 2008, about 1 in 1.8 thousand residents.
- How common is Lejeune compared with other names?
- In France, Lejeune is the 191st most common surname of 1,200,812 surnames recorded there.
What do you want to know about Lejeune?
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/lejeuneThe 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, “Lejeune” — the 191st most common surname in France. Data snapshot 2026-10-13.