Ondřej

given name · Latin script

Meaning: a male given name from Ancient Greek, equivalent to English Andrew

Recorded as a male name· opposite-gender records fall within measured source noise

Ondřej is a given name written in the Latin script, with more bearers in Czechia than in any other country, where it is the 32nd most common given name.

rarermore common
  • CZCzechia1 in 70(measured from records)
  • SKSlovakia≈1 in 900
  • GBUnited Kingdom≈1 in 181K

carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). One hue, darker where it is more common; hover a country for its figure.

Czechia (measured from records)

152,450 people

2 (measured from records)

recorded for this name

Sources
184 (measured from records)

Highest-authority source

1 in 70 (inferred from the name graph)

Czechia

measured from records inferred from the name graph

Spellings & scripts(measured from records)

OndřejLatin(measured from records)
ออนเดรThai(measured from records)

One other spelling is counted as the same name:

Locally spelled Ondrej in SK Slovakia, GB United Kingdom, DE Germany and 3 more.

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.

Meaning & origin(measured from records)

a male given name from Ancient Greek, equivalent to English Andrew

Sources 1

  • kaikki.org Wiktionary extract (IPA + transliterations)

Attested across 18 languages in the etymology graph.

Where in the world(measured from records)

Ondřej 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.

Where Ondřej is recorded, by country
CountryMost common spellingSources
CZ Czechia#32152,4501 in 70152KOndřej184
SK Slovakia#54≈6,000 est.≈1 in 9005Ondrej135
CN China—≈1,700 est.≈1 in 830K—Ondrej3
DE Germany—≈540 est.≈1 in 149KlistedOndrej73
GB United Kingdom—≈360 est.≈1 in 181KlistedOndrej83
RS Serbia—≈190 est.≈1 in 36K—Ondrej14
CY Cyprus—≈48 est.≈1 in 27K—Ondrej5
IS Iceland—311 in 11K31——

152,450 people counted by MVČR — living population register 2017. 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: MVČR — living population register 2017; JÚĽŠ SAV — Databáza priezvisk na Slovensku (surname database, 1995 census); the de-munich-vornamen register; Þjóðskrá Íslands — Name frequencies (NafnTíðni, registry). 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 names spelled this way(inferred from the name graph)

Ondřej is also recorded as 4 other names, grouped separately because the records behind them do not connect to the one described above.

  • a separate name3 spellings in the group

    Also written Ondrej, Ondr̆ej

  • Russian given name18 spellings in the group

    Most recorded in Russia, Ukraine, Türkiye, Kazakhstan

    Languages: Russian, Ukrainian

    Also written Ондрей, Ондржей, Ondrej, Ondrei, Ондреи

  • Croatian given name13 spellings in the group

    Most recorded in Croatia, Serbia, Bulgaria, United Kingdom

    Languages: Croatian, Serbian, Bulgarian

    Also written Ondrej, Ондреј

  • a separate given name2 spellings in the group

    Most recorded in United States, United Kingdom, Switzerland

    Also written Ondrej

34 further groups record this spelling and are not listed here.

Grouping is the name graph's, not a register's: two spellings join a group when the evidence links them, so a group is a claim about the records rather than about the people.

Notable people with this name(measured from records)

1400160018002000Andrzej Bobola, b. 1591Ondřej Sekora, b. 1899Ondřej Soukup, b. 1951Ondřej Trojan, b. 1959Ondřej Vetchý, b. 1962Ondřej Synek, b. 1982Ondřej Moravec, b. 1984Ondřej Hotárek, b. 1984Ondřej Čelůstka, b. 1989Ondřej Lingr, b. 1998

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(measured from records)

Attested in 11 sources across 5 countries.

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

In which country does Ondřej have the most bearers?
In Czechia, the national register counted about 152 thousand people named Ondřej, more than in any other country we hold, where it is most often spelled ondřej.
Where is Ondřej most common?
Ondřej is densest in Czechia, where the national register counts about 1 in 70 people carrying it.
What does the name Ondřej mean, and where does it come from?
a male given name from Ancient Greek, equivalent to English Andrew Recorded by kaikki.org Wiktionary extract (IPA + transliterations).
Is Ondřej a male or female name?
Ondřej 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 are other forms of the name Ondřej?
In the etymology graph, Andrew, Andres and Andre are forms of the same name in other languages.
How common is the name Ondřej?
In Czechia, the national register counted 152,450 people named Ondřej, about 1 in 70 residents.
How common is Ondřej compared with other names?
In Czechia, Ondřej is the 32nd most common given name of 16,679 given names recorded there.

What do you want to know about Ondřej?

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Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/ond%C5%99ej

The 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, “Ondřej” — the 32nd most common given name in Czechia. Data snapshot 2026-10-10.

See how Ondřej parses inside a full name →