Sergius

given name · Latin script

Meaning: männl. Vom., der au f einen altrömi­ schen Geschlechtemamen zurückgeht

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

/ˈsɝdʒjəs/(machine-generated) pronunciation, model-generated

Sergius 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.

rarermore common
  • RURussia≈1 in 31as Сергей(inferred from the name graph)
  • UAUkraine≈1 in 36as Сергій
  • MDMoldova1 in 51as Serghei

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 Sergius 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)

≈4,500,000 named Сергей, est.

#8 (measured from records)

of 15M given names

9 (measured from records)

recorded for this name

Sources
499 (measured from records)

Highest-authority source

≈1 in 31 (inferred from the name graph)

Russia, est., as Сергей

measured from records inferred from the name graph

Name dossier (print, CSV)

Spellings & scripts(measured from records)

СергейCyrillic(measured from records)
SergioLatin(measured from records)
סרגייHebrew(measured from records)
ՍերգեյArmenian(measured from records)
ΣεργιοςGreek(measured from records)
სერგეიGeorgian(measured from records)
เซอร์เกThai(measured from records)
세르게이Hangul(measured from records)
সের্গেইBengali(measured from records)

6 other spellings are counted as the same name:

Locally spelled Sergio in AR Argentina, BR Brazil, ES Spain, Сергей in RU Russia, BY Belarus, 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)

recorded in German

männl. Vom., der au f einen altrömi­ schen Geschlechtemamen zurückgeht. Na­ menspatrone sind der besonders im Orient verehrte heilige Sergius (3-/4. Jh.), der in

Sources 1

  • DUDEN Lexikon der Vornamen

Attested across 14 languages in the etymology graph.

How Sergius is read(measured from records)

Sergius is one spelling over 3 language communities, and the dictionaries record it differently in 2 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.

  • English34%

    pope

    as a namePronouncing Dictionary of Proper Names

  • German25%

    männl. Vom., der au f einen altrömi­ schen Geschlechtemamen zurückgeht. Na­ menspatrone sind der besonders im Orient verehrte heilige Sergius (3-/4. Jh.), der in

    as a nameDUDEN Lexikon der Vornamen

    röm. FN. Märt. Serg|l, el, er (x ON. Ser- gen, Kottbus); Sörg[el, er; Sörries

    as a nameDeutsche Namenkunde: Unsere Familiennamen nach ihrer Entstehung und Bedeutung

  • Indonesian15%

    No dictionary in our sources glosses Sergius in Indonesian.

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)

Sergius 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 Sergius is recorded, by country
CountryMost common spellingSources
RU Russia#3≈4,500,000 est.≈1 in 31#4Сергей311
UA Ukraine#6≈1,200,000 est.≈1 in 36listedСергій149
BR Brazil#53357,718as Sergio1 in 592405KSergio240
AR Argentina#62≈280,000 est.≈1 in 164427Sergio198
ES Spain#25210,727as Sergio1 in 237211KSergio283
BY Belarus#6≈170,000 est.≈1 in 56145Сергей112
MD Moldova#2565,336as Serghei1 in 5165KSergej40
LV Latvia#1620,413as Sergejs1 in 9220Kסרגיי60

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; 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 names spelled this way(inferred from the name graph)

Sergius is also recorded as 3 other names, grouped separately because the records behind them do not connect to the one described above.

  • Spanish given name3 spellings in the group

    Most recorded in Brazil, United States, Philippines, Mexico

    Languages: Spanish, Portuguese

    Also written Sérgius

  • Italian given name2 spellings in the group

    Most recorded in Italy, United States, India

    Also written Sérgius

  • Russian given name5 spellings in the group

    Most recorded in Russia, Ukraine, Türkiye, United States

    Languages: Russian, Ukrainian

    Also written Сергиус, Сергіус

43 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)

500100015002000Sergius I, b. 650Sergius II, b. 790Sergius III, b. 860Sergius IV, b. 970Sergius III of Amalfi, b. 1050Sergius, b. 1871Sergius Ruegenberg, b. 1903Sergius Kagen, b. 1909Sergius Golowin, b. 1930

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)

InformalHi Sergius,

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 26 sources across 20 countries.

Official registers attesting Sergius
CountryRegisterYearCountRank
MD Moldovae-services.md — living population register—4#4,617
ES SpainNombres de Persona en Español (Becker, 2004)———

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

What are other forms of the name Sergius?
In the etymology graph, Sergio, Serhii and Serge are forms of the same name in other languages.
How do you pronounce Sergius?
A machine transcription gives /ˈsɝdʒjəs/ (IPA) for English.
What does the name Sergius mean?
Recorded meaning: männl. Vom., der au f einen altrömi­ schen Geschlechtemamen zurückgeht.
Is Sergius a male or female name?
Sergius 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.
In which country does Sergius 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 Sergius?
In Brazil, the national register counted 357,718 people named Sergio in 2022, about 1 in 592 residents.
How common is Sergius compared with other names?
In Russia, Sergius is the 3rd most common given name of 472,143 given names recorded there.

What do you want to know about Sergius?

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Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/sergius

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, “Sergius” — the 3rd most common given name in Russia. Data snapshot 2026-10-10.

See how Sergius parses inside a full name →