Sergius

Name: Sergius: recorded bearers, distribution and rank
Creator: Mondonomo
Published: 2026-10-13
License: https://mondonomo.ai/tos#rights

given name · Latin script

Meaning: männl. Vom., der au f einen altrömi schen Geschlechtemamen zurückgeht (DUDEN Lexikon der Vornamen)

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

(measured from records)Officially recorded in 20 countries

/sərɡˈius/(machine-generated) Indonesian · model-generated

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Sergius is a male 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. Sergius is also written Сергей in Cyrillic, סרגיי in Hebrew and Սերգեյ in Armenian.

RURussia≈1 in 30as Сергей(inferred from the name graph)
UAUkraine≈1 in 35as Сергій
BYBelarus≈1 in 35as Сергей

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. Countries with no figure are shown too: flat where a national register lists the name without counting it, hatched where only our records hold it. 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)
Record sources: 499 (measured from records)
: ≈1 in 30 (inferred from the name graph)

measured from records inferred from the name graph

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Sergius in other scripts: Cyrillic, Latin, Hebrew and 6 more

СергейSergius in Cyrillic

SergioSergius in Latin

סרגייSergius in Hebrew

ՍերգեյSergius in Armenian

ΣεργιοςSergius in Greek

სერგეიSergius in Georgian

เซอร์เกSergius in Thai

세르게이Sergius in Korean (Hangul)

সের্গেইSergius in Bengali

6 other spellings are counted as the same name:

Locally spelled Sergio in AR Argentina, BR Brazil, MX Mexico, 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.

How to pronounce Sergius

Indonesian:/sərɡˈius/(machine-generated) model-generated

Readings marked model-generated were transcribed by a model; the others are quoted from the dictionary named.

Meaning & origin

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

Cited for this meaning 1

DUDEN Lexikon der Vornamen

Attested across 14 languages in the etymology graph.

How Sergius is read

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

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
Country					Most common spelling	Sources
RU Russia	#3	≈4,800,000 est.	≈1 in 30	register #4	Сергей	311
UA Ukraine	#6	≈1,100,000 est.	≈1 in 35	listed	Сергій	149
MX Mexico	#50	≈610,000 est.	≈1 in 213	2.7K	Sergio	270
BR Brazil	#53	357,718as Sergio	1 in 592	405K	Sergio	240
AR Argentina	#62	≈280,000 est.	≈1 in 165	427	Sergio	198
BY Belarus	#6	≈260,000 est.	≈1 in 35	145	Сергей	112
MD Moldova	#25	65,336as Serghei	1 in 51	65K	Sergej	40
LV Latvia	—	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); RENAPO — name frequencies (eduardofv dataset); 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

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

Sergius Ib. 650ITpope
Sergius IIIb. 860ITpope (860-911)
Sergius IVb. 970ITPope from 1009 to 1012

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

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

26 registers and reference works attest this spelling, across 20 countries.

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?: In Indonesian /sərɡˈius/. Transcriptions are machine-generated except where a dictionary is named.
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.
What does the name Sergius mean?: Recorded meaning: männl. Vom., der au f einen altrömi schen Geschlechtemamen zurückgeht.
Which countries have the most people named Sergius?: Mondonomo estimates about 4.8 million people named Сергей in Russia, more than in any other country we hold. After it come Ukraine, Mexico, Brazil and Argentina; the country table on this page ranks them.
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?

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/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 2026-10-13 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 2026-10-13.

See how Sergius parses inside a full name →