Petr
given name · Latin script
Meaning: männl. Vom., tschechische Form von (DUDEN Lexikon der Vornamen)
A male name· listed as male by the registers that count names by sex
(measured from records)Officially recorded in 29 countries · latest register: dane.gov.pl, 2026
/ˈpɛtr̩/(recorded in a dictionary) Czech · from Wiktionary
Petr is a male given name written in the Latin script, with more bearers in Poland than in any other country, where it is the 2nd most common given name. Petr is also written Петр in Cyrillic, Πετρ in Greek and 피오트르 in Korean (Hangul).
- CZCzechia1 in 20(measured from records)
- SKSlovakia≈1 in 1.8K
- KGKyrgyzstan≈1 in 2.2K
carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). Where a country counts another spelling of the name rather than Petr itself, the figure is that spelling’s, and it is named. One hue, darker where it is more common; hover a country for its figure.
- Poland (measured from records)
- #295 (measured from records)
- 5 (measured from records)
- Record sources
- 318 (measured from records)
- 1 in 20 (inferred from the name graph)
682,519 named Piotr, 2026
of 15M given names, spellings grouped
recorded for this name
corpus datasets behind its best-documented spelling
strongest: highest-authority source
Czechia
measured from records inferred from the name graph
Petr in other scripts: Cyrillic, Latin, Greek and 2 more
(measured from records)One other spelling is counted as the same name:
Locally spelled Piotr in PL Poland, US United States, SE Sweden and Петр in RU Russia.
Spellings marked ● are how people bearing the name write it in our records, and ○ marks a model's transliteration; click a spelling to open its page.
How to pronounce Petr
- Czech:/ˈpɛtr̩/(recorded in a dictionary) from Wiktionary
Meaning & origin
(measured from records)männl. Vom., tschechische Form von
Cited for this meaning 1
- DUDEN Lexikon der Vornamen
Attested across 20 languages in the etymology graph.
Where in the world
(measured from records)Petr 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 | ||||
|---|---|---|---|---|---|---|
| PL Poland | #2 | 682,519as Piotr | 1 in 56 | 686K | Piotr | 276 |
| CZ Czechia | #2 | 544,270 | 1 in 20 | 544K | Petr | 218 |
| US United States | — | 464,396as Peter | 1 in 716 | 464K | Piotr | 318 |
| RU Russia | #63 | ≈290,000 est. | ≈1 in 494 | register #19 | Петр | 209 |
| HU Hungary | — | 135,685as Péter | 1 in 72 | 136K | — | 2 |
| SE Sweden | #782 | 112,872as Peter | 1 in 90 | 113K | Piotr | 64 |
| DK Denmark | — | 45,777as Peter | 1 in 128 | 46K | — | 1 |
682,519 people counted by dane.gov.pl — PESEL given names (first + second name position, 2026-01-20), 2026. 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: dane.gov.pl — PESEL given names (first + second name position, 2026-01-20); dane.gov.pl — PESEL living persons (names); MVČR — living population register 2017; Census Bureau — First Name Frequency 2020 by sex; Nyilvántartó — Top-100 given names in population (2020–2025); Skatteverket — Sök hur många som har ett visst namn (living population); Danmarks Statistik — Hvor mange hedder...? (living-population name counts). 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)Petr 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 Russian, "rock." Russianization of Peter.
as a wordA Dictionary of Period Russian Names (Wickenden / Goldschmidt 1996)
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)- Peter II of Russiab. 1715RUnot in their usual nameEmperor of Russia (1715-1730)
- Peter III of Russiab. 1728DEnot in their usual nameThe seventh Emperor of Russia (1762)
- Pyotr Kapitsab. 1894RUnot in their usual nameSoviet physicist
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)60 registers and reference works attest this spelling, across 29 countries.
Register rows as of the 2026-10-09 data build.
Frequently asked questions
- What does the name Petr mean, and where does it come from?
- männl. Vom., tschechische Form von Recorded by DUDEN Lexikon der Vornamen.
- Is Petr a male or female name?
- Petr is a male name. National registers that list it by sex list it as male: United States (Census Bureau, 2020), Poland (dane.gov.pl, 2026), Finland (DVV) and Spain (INE), among others.
- What are other forms of the name Petr?
- In the etymology graph, Peter, Pedro and Pierre are forms of the same name in other languages.
- How do you pronounce Petr?
- In Czech /ˈpɛtr̩/ (Wiktionary).
- Which countries have the most people named Petr?
- In Poland, the national register counted about 683 thousand people named Piotr, more than in any other country we hold. After it come Czechia, United States, Russia and Hungary; the country table on this page ranks them.
- Where is Petr most common?
- Measured as a share of residents rather than as a count, Petr is densest in Czechia — about 1 in 20 people — even though Poland holds more of our records for it.
- How common is the name Petr?
- In Czechia, the national register counted 544,270 people named Petr, about 1 in 20 residents.
- How common is Petr compared with other names?
- In Poland, Petr is the 2nd most common given name of 25,969 given names recorded there.
What do you want to know about Petr?
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/petrThe 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, “Petr” — ranked first in Poland (dane.gov.pl). Data snapshot 2026-10-13.