Sergei
given name · Latin script
Meaning, in Russian: Sergei, father superior of the Nikolaevskii Ostrovskii monastery. 1456-71
Recorded as a male name· opposite-gender records fall within measured source noise
/ˈsɛɹˌɡeɪ/(machine-generated) pronunciation, model-generated
Sergei 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.
- FIFinland1 in 8.9K(measured from records)
- 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 Sergei 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 8.9K (inferred from the name graph)
≈4,500,000 named Сергей, est.
of 15M given names
recorded for this name
Highest-authority source
Finland
measured from records inferred from the name graph
Spellings & scripts(measured from records)
Locally spelled Сергей in RU Russia, BY Belarus, FI Finland, Sergio in AR Argentina, BR Brazil, ES Spain, Сергій in UA Ukraine and Sergej in MD Moldova.
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)
From Latin Sergius, an old Roman family name of uncertain origin. St Sergei of Radonezh (1314-92) is one of the most popular of all Russian saints.
Sources 1
- A concise dictionary of first names
Attested across 12 languages in the etymology graph.
How Sergei is read(measured from records)
Sergei is one spelling over 5 language communities, and the dictionaries record it differently in 3 of them. Each row is what a source recorded for that language, beside the share of this name’s records the language holds. No single row is the name’s meaning.
- Russian41%
Sergei, father superior of the Nikolaevskii Ostrovskii monastery. 1456-71.
as a wordA Dictionary of Period Russian Names (Wickenden / Goldschmidt 1996)
- Chinese11%
No dictionary in our sources glosses Sergei in Chinese.
- English10%
A transliteration of the Russian male given name Серге́й (Sergéj), equivalent to Sergius.
as a wordkaikki.org Wiktionary extract (IPA + transliterations)
- Finnish6.1%
The anti-aircraft autocannon ZU-23-2.
as a wordkaikki.org Wiktionary extract (IPA + transliterations)
- Portuguese5.6%
No dictionary in our sources glosses Sergei in Portuguese.
The share is ours — how much of this name’s records each language holds. The sense beside it is the source’s, quoted and credited, including where it names a gender. We do not publish a gender of our own per language: our records carry one figure for the spelling as a whole.
Where in the world(measured from records)
Sergei 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 |
| LV Latvia | #16 | 20,413as Sergejs | 1 in 92 | 20K | סרגיי | 60 |
| FI Finland | #4 | 624 | 1 in 8.9K | 4.1K | Сергей | 46 |
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; DVV — Etunimitilasto (Finnish given names register); DVV — Nimipalvelu (Finnish name service, per-name lookup); 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)
Sergei 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.
From Latin Sergius, an old Roman family name of uncertain origin. St Sergei of Radonezh (1314-92) is one of the most popular of all Russian saints.
as a nameA concise dictionary of first names
Russian: from the old Roman family name Sergius , which is of uncertain, though probably Etruscan, origin. (It was borne, for example, by the conspirator denounced by Cicero, Lucius Sergius Catilina.) St Sergius of Radonezh ( c. 1314–92) is one of the most famous of all Russian saints, hence the great popularity of the name. Pet form: Seryozha .
as a word
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. 1898RUSoviet 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. 1955RUSecretary of the Security Council of the Russian Federation since 2024 and former Russian defense minister
- Sergei Surovikinb. 1966RUHead 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)
Evidence(measured from records)
Attested in 56 sources across 29 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| FI Finland | DVV — Nimipalvelu (Finnish name service, per-name lookup) | — | 4.1K | #354 |
| ES Spain | INE — Padrón per-token widgets (current living counts, given + apellidos) | — | 1.2K | #2,470 |
| FI Finland | DVV — Etunimitilasto (Finnish given names register) | — | 624 | — |
| ES Spain | INE — Nombres más frecuentes (Padrón Municipal) | — | 580 | #1,899 |
| LV Latvia | PMLP — Personu vārdi (given names in population register) | — | 281 | — |
| LV Latvia | PMLP — Personvārdu meklētājs (per-name population-register lookup) | — | 275 | #778 |
| MD Moldova | e-services.md — living population register | — | 137 | #808 |
| BR Brazil | IBGE — names by decade (Kaggle mirror) | 2022 | 101 | — |
| BR Brazil | IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname) | — | 101 | #41,030 |
| BR Brazil | Brasil.IO genero-nomes (IBGE Censo 2010 mirror, CC-BY-SA) | — | 88 | #20,343 |
| BR Brazil | IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname) | 1970 | 32 | — |
| BR Brazil | IBGE — Nomes (census name API) | — | 29 | #53,991 |
Reference works 3
- Dictionary of American Family Names
- 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
- Where does the name Sergei come from?
- From Latin Sergius, an old Roman family name of uncertain origin. St Sergei of Radonezh (1314-92) is one of the most popular of all Russian saints. Recorded by A concise dictionary of first names.
- How do you pronounce Sergei?
- A machine transcription gives /ˈsɛɹˌɡeɪ/ (IPA) for Russian.
- What does the name Sergei mean?
- In Russian, Sergei, father superior of the Nikolaevskii Ostrovskii monastery. 1456-71.
- In which country does Sergei have the most bearers?
- Mondonomo estimates about 4.5 million people named Сергей in Russia, more than in any other country we hold.
- Where is Sergei most common?
- Measured as a share of residents rather than as a count, Sergei is densest in Finland — about 1 in 8.9 thousand people — even though Russia holds more of our records for it.
- Is Sergei a male or female name?
- Sergei 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 Sergei?
- In the etymology graph, Sergio, Serge and Sergey are forms of the same name in other languages.
- How common is the name Sergei?
- In Finland, the national register counted 624 people named Sergei, about 1 in 8.9 thousand residents.
- How common is Sergei compared with other names?
- In Russia, Sergei is the 3rd most common given name of 472,143 given names recorded there.
What do you want to know about Sergei?
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/sergeiThe 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, “Sergei” — the 3rd most common given name in Russia. Data snapshot 2026-10-10.