Lenni
given name · Latin script
Recorded as a male name· opposite-gender records fall within measured source noise
/ənni/(machine-generated) pronunciation, model-generated
Lenni is a given name written in the Latin script, with more bearers in Finland than in any other country. Recorded meaning: Vernacular form of Swedish Lennart or Leonard.
- FIFinland1 in 1.1K(measured from records)
- DKDenmark1 in 61K
- SESweden1 in 133K
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.
- Finland (measured from records)
- Sources
- 49 (measured from records)
- 1 in 1.1K (inferred from the name graph)
4,890 people
Highest-authority source
Finland
measured from records inferred from the name graph
Meaning & origin(measured from records)
Vernacular form of Swedish Lennart or Leonard.
Sources 3
- Wiktionary
- Etymological Dictionary of Hungarian
- Nordic Names
Attested across 16 languages in the etymology graph.
Often considered alongside
Names that people choosing a name often weigh against Lenni, most often first. They share a style rather than an origin.
From the names suggested together in public name-advice forums, in English. A list of what people consider, not a measure of how common any name is.
Where in the world(measured from records)
Lenni 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 | |||
|---|---|---|---|---|---|
| FI Finland | 4,890 | 1 in 1.1K | 5.3K | Lenni | 4 |
| US United States | 341 | 1 in 975K | 248 | Lenni | 49 |
| DK Denmark | 97 | 1 in 61K | 81 | — | — |
| SE Sweden | 77 | 1 in 133K | 77 | — | 1 |
| BR Brazil | 50 | 1 in 4.2M | 50 | Lenni | 21 |
| CR Costa Rica | 6 | 1 in 850K | 6 | — | 2 |
| LV Latvia | 2 | 1 in 941K | 2 | — | — |
4,890 people counted by DVV — Etunimitilasto (Finnish given names register). 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: DVV — Etunimitilasto (Finnish given names register); DVV — Nimipalvelu (Finnish name service, per-name lookup); Census Bureau — First Name Frequency 2020 by sex; IBGE — names by decade (Kaggle mirror); Danmarks Statistik — Hvor mange hedder...? (living-population name counts); Skatteverket — Sök hur många som har ett visst namn (living population); TSE — electoral roll (padrón) names; PMLP — Personu vārdi (given names in population register). 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)
Lenni is also recorded in 2 other lexicons, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.
In Hungarian, to be; to become
as a wordEtymological Dictionary of Hungarian
In Hungarian, infinitive of van
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)
- Lenni Lainesalob. 1929FIFinnish ice hockey player
- Lenni Brennerb. 1937USAmerican activist
- Lenni Jabourb. 1970CACanadian musician
- Lenni-Kalle Taipaleb. 1978FIFinnish pianist
- Marius Bøeb. 1981NOnot in their usual nameNorwegian association football manager
- Emil Kihlströmb. 1991FInot in their usual nameFinnish actor
- Lenni Kimb. 2001CACanadian singer
- Lenni Hämäläinenb. 2002FIFinnish ice hockey player
- Lenni Hämeenahob. 2004FIFinnish ice hockey player
- Lenni Koschuhb. 2004CHSwiss ice hockey 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 37 sources across 22 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| FI Finland | DVV — Nimipalvelu (Finnish name service, per-name lookup) | — | 5.3K | #296 |
| FI Finland | DVV — Etunimitilasto (Finnish given names register) | — | 4.9K | — |
| US United States | Census Bureau — First Name Frequency 2020 by sex | 2020 | 248 | #27,021 |
| US United States | Census Bureau — First Name Frequency 2020 by sex | 2020 | 93 | #27,021 |
| DK Denmark | Danmarks Statistik — Hvor mange hedder...? (living-population name counts) | — | 81 | #1,668 |
| SE Sweden | Skatteverket — Sök hur många som har ett visst namn (living population) | — | 77 | #10,148 |
| FI Finland | DVV — Nimipalvelu (Finnish name service, per-name lookup) | — | 74 | #3,688 |
| US United States | SSA — National Baby Names (1880–present) | 2023 | 52 | — |
| BR Brazil | IBGE — names by decade (Kaggle mirror) | 2022 | 50 | — |
| US United States | SSA — National Baby Names (1880–present) | 2025 | 46 | — |
| US United States | SSA — National Baby Names (1880–present) | 2024 | 45 | — |
| SE Sweden | SCB — Namnstatistik (to 2023) | 2018 | 45 | — |
Reference works 2
- Wikipedia given-name tokens
- 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
- What are other forms of the name Lenni?
- In the etymology graph, Leonardo, Leonard and Lenny are forms of the same name in other languages.
- How do you pronounce Lenni?
- A machine transcription gives /ənni/ (IPA) for Indonesian.
- Is Lenni a male or female name?
- Lenni 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.
- What does the name Lenni mean, and where does it come from?
- Vernacular form of Swedish Lennart or Leonard. Recorded by Wiktionary and Etymological Dictionary of Hungarian and 1 other source.
- In which country does Lenni have the most bearers?
- In Finland, the national register counted about 4.9 thousand people named Lenni, more than in any other country we hold, where it is most often spelled lenni.
- Where is Lenni most common?
- Lenni is densest in Finland, where the national register counts about 1 in 1.1 thousand people carrying it.
- How common is the name Lenni?
- In Finland, the national register counted 4,890 people named Lenni, about 1 in 1.1 thousand residents.
What do you want to know about Lenni?
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/lenniThe 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, “Lenni”. Data snapshot 2026-10-10.