Sergej
given name · Latin script
Meaning: A transliteration of the Russian male given name Серге́й (Sergéj)
Recorded as a male name· opposite-gender records fall within measured source noise
/sɝdʒʒ/(machine-generated) pronunciation, model-generated
Sergej is a given name written in the Latin script, with more bearers in Russia than in any other country, where it is the 3rd most common given name.
- DEGermany≈1 in 3.5K(inferred from the name graph)
- RURussia≈1 in 31as Сергей
- UAUkraine≈1 in 36as Сергій
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 Sergej 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.
- Russia (inferred from the name graph)
- #8 (measured from records)
- 9 (measured from records)
- Sources
- 499 (measured from records)
- ≈1 in 3.5K (inferred from the name graph)
≈4,500,000 named Сергей, est.
of 15M given names
recorded for this name
Highest-authority source
Germany, est.
measured from records inferred from the name graph
Spellings & scripts(measured from records)
Locally spelled Sergio in AR Argentina, BR Brazil, ES Spain and 1 more, Сергей in RU Russia, BY Belarus, Сергій in UA Ukraine and סרגיי in LV Latvia.
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 transliteration of the Russian male given name Серге́й (Sergéj)
Sources 1
- kaikki.org Wiktionary extract (IPA + transliterations)
Attested across 16 languages in the etymology graph.
Where in the world(measured from records)
Sergej 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 | ||||
|---|---|---|---|---|---|---|
| RU Russia | #3 | ≈4,500,000 est. | ≈1 in 31 | #4 | Сергей | 311 |
| UA Ukraine | #6 | ≈1,200,000 est. | ≈1 in 36 | listed | Сергій | 149 |
| BR Brazil | #53 | 357,718as Sergio | 1 in 592 | 405K | Sergio | 240 |
| AR Argentina | #62 | ≈280,000 est. | ≈1 in 164 | 427 | Sergio | 198 |
| ES Spain | #25 | 210,727as Sergio | 1 in 237 | 211K | Sergio | 283 |
| BY Belarus | #6 | ≈170,000 est. | ≈1 in 56 | 145 | Сергей | 112 |
| MD Moldova | #25 | 65,336as Serghei | 1 in 51 | 65K | Sergej | 40 |
| DE Germany | #619 | ≈23,000 est. | ≈1 in 3.5K | 1 | Sergio | 174 |
| LV Latvia | #16 | 20,413as Sergejs | 1 in 92 | 20K | סרגיי | 60 |
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: RENAPER — Apellidos (person counts, national); IBGE — names by decade (Kaggle mirror); IBGE — Nomes (census name API); INE — Padrón per-token widgets (current living counts, given + apellidos); Universal Dependencies Belarusian-HSE Corpus — Person Names (UD_Belarusian-HSE); e-services.md — living population register; the de-leipzig-vornamen register; 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)
Sergej 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 German, Sergej Rachmaninow, russisch-amerikanischer Komponist und Pianist
as a nameDUDEN Lexikon der Vornamen
In Swedish, Sergej är en slavisk form av det romerska släktnamnet Sergius (→ Sergio).
as a nameFörnamn i Sverige. Kortfattat namnlexikon
In German, männl. Vom., russische Form von
as a nameDUDEN Lexikon der Vornamen
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)
- Sergey Aksakovb. 1791RUnot in their usual nameRussian writer
- Sergey Vavilovb. 1891RUnot in their usual nameSoviet physicist
- Serge Prokofievb. 1891UAnot in their usual nameRussian and Soviet pianist, composer and conductor (1891–1953)
- Sergei Eisensteinb. 1898RUnot in their usual nameSoviet filmmaker (1898–1948)
- Sergey Lavrovb. 1950RUnot in their usual nameRussian politician of Armenian origin, Minister of Foreign Affairs
- Sergey Nikolayevich Lazarevb. 1952RUnot in their usual nameRussian parapsychologist, writer, psychologist, philosopher, psychic, painter
- Sergei Shoigub. 1955RUnot in their usual nameSecretary of the Security Council of the Russian Federation since 2024 and former Russian defense minister
- Sergei Surovikinb. 1966RUnot in their usual nameHead of the CIS' Coordinating Committee for Air Defence
- Sergey Lukyanenkob. 1968RUnot in their usual nameRussian science fiction writer
- Sergey Brinb. 1973USnot in their usual nameAmerican billionaire businessman (born 1973)
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 45 sources across 24 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| ES Spain | INE — Padrón per-token widgets (current living counts, given + apellidos) | — | 75 | #19,829 |
| ES Spain | INE — Nombres más frecuentes (Padrón Municipal) | — | 60 | #11,144 |
| LV Latvia | PMLP — Personu vārdi (given names in population register) | — | 37 | — |
| LV Latvia | PMLP — Personvārdu meklētājs (per-name population-register lookup) | — | 35 | #1,909 |
| MD Moldova | e-services.md — living population register | — | 15 | #2,283 |
| AR Argentina | RENAPER — births 1922–2015 (Kaggle mirror) | 1954 | 2 | — |
| DE Germany | Stadt Leipzig Open Data — Vornamensstatistik Neugeborene | 2022 | 1 | #3 |
| DE Germany | Stadt Düsseldorf Open Data — Vornamen Neugeborene | 2012 | 1 | — |
| DE Germany | Stadt München Open Data — Vornamen von Nulljährigen | 2025 | — | — |
Reference works 3
- Wikipedia given-name tokens
- Wikidata name items (native-script + romanized given/family names)
- Rymut, Słownik nazwisk współcześnie w Polsce używanych (10 vols, IJP PAN, Kraków 1992–1994) — every Polish surname in the PESEL register at the end of 1990, with bearer counts nationally and per voivodeship1990
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 Sergej?
- A machine transcription gives /sɝdʒʒ/ (IPA) for Russian.
- What does the name Sergej mean, and where does it come from?
- A transliteration of the Russian male given name Серге́й (Sergéj) Recorded by kaikki.org Wiktionary extract (IPA + transliterations).
- Is Sergej a male or female name?
- Sergej 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 Sergej?
- In the etymology graph, Sergio, Serge and Sergey are forms of the same name in other languages.
- In which country does Sergej have the most bearers?
- Mondonomo estimates about 4.5 million people named Сергей in Russia, more than in any other country we hold.
- How common is the name Sergej?
- In Brazil, the national register counted 357,718 people named Sergio in 2022, about 1 in 592 residents.
- How common is Sergej compared with other names?
- In Russia, Sergej is the 3rd most common given name of 472,143 given names recorded there.
What do you want to know about Sergej?
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/sergejThe 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, “Sergej” — the 3rd most common given name in Russia. Data snapshot 2026-10-10.