Leonardus
given name · Western Frisian · Latin script
Recorded as a male name· opposite-gender records fall within measured source noise
Leonardus is a given name, with more bearers in the Netherlands than in any other country, where it is the 61st most common given name. It appears chiefly in Western Frisian and Dutch, written in the Latin script. Recorded meaning: Borrowed from Old High German Leonhart (literally “as strong as a lion”), from leo (“lion”) and hart (“hard, strong”).
- NLNetherlands1 in 259◐
- BEBelgium1 in 63K
- ZASouth Africa1 in 66K
carrying the name, one hue, darker where it is more common. Hover a country for its figure.
- ≈67K ●
- Sources
- 57 ●
- 1 in 259 ◐
across 8 countries
3.2K records
Official registry-verified
Netherlands
Meaning & origin●
- Old High GermanLeonhart“as strong as a lion”●
- Old High German rootleo“lion”●
Borrowed from Old High German Leonhart (literally “as strong as a lion”), from leo (“lion”) and hart (“hard, strong”).
Sources 2
Where in the world●
Sorted by bearers counted by national registers, records where none counts.
| Country | Most common spelling | Sources | |||||
|---|---|---|---|---|---|---|---|
| NL Netherlands | #61 | 66,777△ | 783 rec. | 1 in 259 | 67K | Leonardus | 57 |
| US United States | — | 840 | 768 rec. | — | — | Leonardus | 54 |
| ZA South Africa | — | 514 | 497 rec. | — | — | Leonardus | 14 |
| DE Germany | — | 394 | 146 rec. | — | — | Leonardus | 32 |
| AU Australia | — | 348 | 311 rec. | — | 3 | Leonardus | 32 |
| FR France | — | 249 | 130 rec. | — | — | Leonardus | 45 |
| BE Belgium | — | 245 | 152 rec. | — | — | Leonardus | 30 |
| ES Spain | — | 110 | 48 rec. | — | — | Leonardus | 24 |
| GB United Kingdom | — | 109 | 74 rec. | — | — | Leonardus | 16 |
| SE Sweden | — | 76△ | 2 rec. | 1 in 134K | 76 | — | 4 |
| NZ New Zealand | — | 68 | 60 rec. | — | — | Leonardus | 8 |
| MY Malaysia | — | 58 | 21 rec. | — | — | Leonardus | 8 |
Roughly 67K people in Netherlands bear this name (about 1 in 259). Estimates project the name's share of our records onto national population, so each is only as good as the record base beside it — the Basis column gives that base; rows marked △ rest on fewer records than the estimate itself and are order-of-magnitude at best.
Country figures for a list of names, at full precision, are available under licence rather than by scraping this table. How that works.
Languages●
- Western Frisian90K38%
- Dutch74K31%
- English68K29%
- Indonesian4.1K2%
- German5191%
Show as table
| Name | Records | Note |
|---|---|---|
| Western Frisian | 90,159 | 38% |
| Dutch | 73,521 | 31% |
| English | 68,131 | 29% |
| Indonesian | 4,136 | 2% |
| German | 519 | 1% |
Language is read off each record's context, not declared by the bearer; a share is of all records for this spelling.
Other recorded senses●
Leonardus is also recorded in one other lexicon, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.
In Latin, a male given name, equivalent to English Leonard
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.
Over time●
Show as table
| Year | records |
|---|---|
| 1999 | 11 |
| 2000 | 11 |
| 2001 | 12 |
| 2002 | 13 |
| 2003 | 12 |
| 2004 | 14 |
| 2005 | 17 |
| 2006 | 16 |
| 2007 | 17 |
| 2008 | 18 |
| 2009 | 18 |
| 2010 | 18 |
| 2011 | 18 |
| 2012 | 15 |
| 2013 | 15 |
| 2014 | 15 |
| 2015 | 16 |
| 2016 | 17 |
| 2017 | 17 |
| 2018 | 17 |
| 2019 | 17 |
| 2020 | 17 |
SE SCB — Namnstatistik (to 2023) — 22 years between 1999–2020. One register's own figures, never a sum across registers: two registers counting the same people would double them.
Notable people with this name●
- Leonardus Lessiusb. 1554BELenaert Leys, Flemish moral theologian from the Jesuit order (1554-1623)
- Leo H. Klaassenb. 1920NLnot in their usual nameDutch economist and university professor (1920-1992)
- Leonardus Laeyendeckerb. 1930NLuniversity teacher at Leiden University
- Leonardus Benjamin Moerdanib. 1932IDIndonesian military person (1932–2004)
- Leo van de Pasb. 1942NLnot in their usual nameDutch genealogist
- Hans Hagenbeekb. 1942NLnot in their usual nameDutch architect (1942-2021)
- Erick van Egeraatb. 1956NLnot in their usual nameDutch architect (b.1956)
- Afrojackb. 1987NLnot in their usual nameDutch electronic dance music producer and DJ (born 1987)
- Jonatan Christieb. 1997IDnot in their usual nameIndonesian badminton player
- Kyle Walker-Petersb. 1997GBnot in their usual nameEnglish 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).
Evidence●
Attested in 19 sources across 12 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| NL Netherlands | Meertens NVB — Nederlandse Voornamenbank (all-time BRP bearer counts, 2018) | — | 67K | #34 |
| NL Netherlands | Meertens NVB — Nederlandse Voornamenbank (live per-name BRP counts, 1790-2017) | — | 23K | #123 |
| NL Netherlands | Meertens NVB — Nederlandse Voornamenbank (all-time BRP bearer counts, 2018) | — | 1.5K | #994 |
| SE Sweden | Skatteverket — Sök hur många som har ett visst namn (living population) | — | 76 | #10,291 |
| FI Finland | DVV — Nimipalvelu (Finnish name service, per-name lookup) | — | 48 | #8,440 |
| PL Poland | dane.gov.pl — PESEL given names (first + second name position, 2026-01-20) | 2026 | 26 | #1,838 |
| BR Brazil | IBGE — names by decade (Kaggle mirror) | 2022 | 20 | — |
| BR Brazil | IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname) | — | 20 | #124,180 |
| PL Poland | dane.gov.pl — PESEL living persons (names) | — | 19 | #6,274 |
| SE Sweden | SCB — Namnstatistik (to 2023) | 2011 | 18 | — |
| SE Sweden | SCB — Namnstatistik (to 2023) | 2010 | 18 | — |
| SE Sweden | SCB — Namnstatistik (to 2023) | 2009 | 18 | — |
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 2026-09-12 data build · 47 rows in the corpus for this spelling.
Frequently asked questions
- How common is the name Leonardus?
- We estimate roughly 67 thousand people bear Leonardus (counting its spellings and scripts) across 8 countries in our records.
- In which country does Leonardus have the most bearers?
- We estimate about 67 thousand people bear Leonardus in the Netherlands, more than in any other country in our records, where it is most often spelled leonardus.
- Where is Leonardus most common?
- Leonardus is densest in the Netherlands, where the national register counts about 1 in 259 people carrying it.
- How common is Leonardus compared with other names?
- In the Netherlands, Leonardus is the 61st most common given name of 134,847 given names recorded there.
- Is Leonardus a male or female name?
- Leonardus 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 Leonardus mean?
- Recorded meaning: Borrowed from Old High German Leonhart (literally “as strong as a lion”), from leo (“lion”) and hart (“hard, strong”).
Query this name via API
curl https://api.mondonomo.ai/api/v1/name-graph/leonardusThe same payload this page is built from: spellings and scripts, countries and languages, related names, and the registers that attest the form. Rate-limited for casual use. Bulk access and licensing.
About this data
Data snapshot . Figures are rebuilt periodically and will change.
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, “Leonardus” — the 61st most common given name in Netherlands. Data snapshot 2026-09-12.