Leoni
given name · Latin script
Meaning: probably an altered form of Catalan lleom a nickname meaning ‘like a lion’
Recorded as a female name· opposite-gender records fall within measured source noise
/ljuni/(machine-generated) pronunciation, model-generated
Leoni is a given name written in the Latin script, with more bearers in Brazil than in any other country.
- USUnited States1 in 851K(measured from records)
- BRBrazil1 in 18K
- GYGuyana1 in 27K
carrying the name, as counted by each country's national register. One hue, darker where it is more common; hover a country for its figure.
- Brazil (measured from records)
- Sources
- 215 (measured from records)
- 1 in 18K (inferred from the name graph)
11,503 people, 2022
Highest-authority source
Brazil
measured from records inferred from the name graph
Meaning & origin(measured from records)
probably an altered form of Catalan lleom a nickname meaning ‘like a lion’.
Sources 1
- Dictionary of American Family Names
Attested across 3 languages in the etymology graph.
Where in the world(measured from records)
Leoni 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 | |||
|---|---|---|---|---|---|
| BR Brazil | 11,503 | 1 in 18K | 15K | — | 3 |
| US United States | 391 | 1 in 851K | 1.1K | Leoni | 215 |
| SE Sweden | 212 | 1 in 48K | 212 | — | 9 |
| PL Poland | 44 | 1 in 870K | 39 | Leoni | 1 |
| NL Netherlands | 40 | 1 in 432K | 396 | Leoni | 43 |
| GY Guyana | 28 | 1 in 27K | 28 | Leoni | 1 |
| SI Slovenia | 27 | 1 in 78K | 32 | — | — |
| FI Finland | 16 | 1 in 348K | 54 | — | 2 |
11,503 people counted by IBGE — names by decade (Kaggle mirror), 2022. 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: IBGE — names by decade (Kaggle mirror); IBGE — Nomes (census name API); Census Bureau — First Name Frequency 2020 by sex; Census Bureau — Surname Frequency 2020; Meertens NVB — Nederlandse Voornamenbank (all-time BRP bearer counts, 2018); Meertens NVB — Nederlandse Voornamenbank (live per-name BRP counts, 1790-2017); Skatteverket — Sök hur många som har ett visst namn (living population); Guyana — Official List of Electors July 2025; DVV — Etunimitilasto (Finnish given names register); DVV — Nimipalvelu (Finnish name service, per-name lookup); dane.gov.pl — PESEL given names (first + second name position, 2026-01-20); dane.gov.pl — PESEL living persons (names); SURS — resident population given names; stat.si Imena rojstva — full name register (per-token frequency + rank). 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)
Leoni is also recorded in 3 other lexicons, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.
In Italian, do nome lat. Leo; o sobrenome se define com freqüência como Leonis.
as a nameDicionário dos sobrenomes italianos
In German, a female given name, a less common variant of Leonie
as a wordkaikki.org Wiktionary extract (IPA + transliterations)
In Latin, dative singular of leō
as a wordkaikki.org Wiktionary extract (IPA + transliterations)
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)
- Leoni W. Robinsonb. 1851USAmerican architect
- Leoni Ióriob. 1899BRBrazilian journalist
- Leoni Kingsburyb. 1909GBbadminton player
- Leoni Mendonçab. 1916BRBrazilian politician
- Karin Wolffb. 1947DEnot in their usual nameGerman translator and literary editor
- Leoni Jansenb. 1955NLDutch female singer and news presenter
- Leoni Torresb. 1977CUmusician
- Leoni Kristin Oeffingerb. 1983DEGerman voice actor
- Leoni Edenhoferb. 2000DEGerman association football player
- Leoni FaustDEGerman association football player
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 76 sources across 37 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| BR Brazil | IBGE — Nomes (census name API) | — | 15K | #1,665 |
| BR Brazil | IBGE — names by decade (Kaggle mirror) | 2022 | 12K | — |
| BR Brazil | IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname) | — | 7.5K | #1,546 |
| BR Brazil | IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname) | — | 4K | #1,546 |
| NL Netherlands | Meertens NVB — Nederlandse Voornamenbank (live per-name BRP counts, 1790-2017) | — | 396 | #3,717 |
| US United States | Census Bureau — First Name Frequency 2020 by sex | 2020 | 312 | #24,570 |
| SE Sweden | Skatteverket — Sök hur många som har ett visst namn (living population) | — | 212 | #5,022 |
| BR Brazil | IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname) | 2020 | 97 | — |
| SE Sweden | SCB — Namnstatistik (to 2023) | 2020 | 81 | — |
| US United States | Census Bureau — First Name Frequency 2020 by sex | 2020 | 79 | #24,570 |
| FI Finland | DVV — Nimipalvelu (Finnish name service, per-name lookup) | — | 54 | #5,076 |
| PL Poland | dane.gov.pl — PESEL living persons (names) | — | 39 | #2,685 |
Reference works 8
- Dictionary of American Family Names
- Nederlandse FamilienamenBank (Dutch surname bank; ex-Meertens Instituut, now CBG)2007
- 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)
- Ismlar.com — Uzbek given-name dictionary (meanings, gender, origin)
- Cognomix.it (Nomix s.r.l.) — Italian surname origin dictionary
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 Leoni?
- A machine transcription gives /ljuni/ (IPA) for Portuguese.
- What does the name Leoni mean, and where does it come from?
- probably an altered form of Catalan lleom a nickname meaning ‘like a lion’. Recorded by Dictionary of American Family Names.
- Is Leoni a male or female name?
- Leoni is a female 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.
- What are other forms of the name Leoni?
- In the etymology graph, Leo is a form of the same name in other languages.
- In which country does Leoni have the most bearers?
- In Brazil, the national register counted about 12 thousand people named Leoni, more than in any other country we hold.
- Where is Leoni most common?
- Leoni is densest in Brazil, where the national register counts about 1 in 18 thousand people carrying it.
- How common is the name Leoni?
- In Brazil, the national register counted 11,503 people named Leoni in 2022, about 1 in 18 thousand residents.
What do you want to know about Leoni?
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/leoniThe 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, “Leoni”. Data snapshot 2026-10-10.