Sŏ

surname · Latin script

Sŏ is a surname written in the Latin script, with more bearers in South Korea than in any other country, where it is the 56th most common surname. Recorded meaning: From Middle English so, swo, zuo, swa, swe, from Old English swā, swǣ, swē (“so, as, the same, such, that”), from Proto-West Germanic *swā, from Proto-Germanic *swa, *swē (“so”), from Proto-Indo-Europ.

  • USUnited States1 in 45K(measured from records)
  • BRBrazil1 in 52K
  • FIFinland1 in 107K

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 Sŏ 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.

South Korea (measured from records)

53,856 named 소, 2015

Record sources
194 (measured from records)

corpus datasets behind its best-documented spelling

strongest: highest-authority source

≈1 in 4.9K (inferred from the name graph)

North Korea, est.

measured from records inferred from the name graph

Spellings & scripts

(measured from records)

2 other spellings are counted as the same name:

Locally spelled So in US United States, NL Netherlands, KP North Korea and 소 in KR South Korea.

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)
Derivation of Sŏ: each step is the form the one above it came from.
Sŏ
  1. Middle Englishso(measured from records)
  2. Old Englishswā“so“so, as, the same, such, that”(measured from records)
  3. Proto-West Germanic*swā(measured from records)
  4. Proto-Germanic*swa“so”(measured from records)
  5. Proto-Indo-European*swēreflexive pronomial stem(measured from records)

From Middle English so, swo, zuo, swa, swe, from Old English swā, swǣ, swē (“so, as, the same, such, that”), from Proto-West Germanic *swā, from Proto-Germanic *swa, *swē (“so”), from Proto-Indo-European *swē, *swō (reflexive pronomial stem). Cognate with Scots sae (“so”), West Frisian sa (“so”), Low German so (“so”), Dutch zo (“so”), German so (“so”), Danish så (“so”), Norwegian Nynorsk so, Swedish så ("so, such that"), Old Latin suad (“so”), Albanian sa (“how much, so, as”), Ancient Greek ὡς (hōs, “as”), Urdu سو (sō, “hence”).

Cited for this meaning 7

  • 국립국어원 외래어 표기 용례 자료 (NIKL loanword/foreign-name transcription examples)
  • Digital Pāḷi Dictionary
  • A Frequency Dictionary of German
  • Wiktionary
  • Biblical Names Compiled Database

Attested across 28 languages in the etymology graph.

Where the surname Sŏ is found

(measured from records)

Sŏ 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 Sŏ is recorded, by country
CountryMost common spellingSources
KR South Korea#5653,856as 소1 in 962825K소156
US United States—7,4561 in 45K7.8KSo194
KP North Korea—≈5,400 est.≈1 in 4.9K—So23
BR Brazil—4,0691 in 52K4.1K—1
NL Netherlands—1141 in 152K114So10
FI Finland—521 in 107K52—2

53,856 people counted by KOSIS 2015 Census — surname population with hanja variants, 2015. 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: KOSIS 2015 Census — surname population with hanja variants; KOSIS — 2015 census surnames; Census Bureau — Surname Frequency 2010; Census Bureau — Surname Frequency 2020; IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname); CBG Familienamenbank — Dutch surname bearer counts (GBA/BRP 2007); DVV — Nimipalvelu (Finnish name service, per-name lookup). 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)

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

  • a separate name17 spellings in the group

    Also written S-O, Só, Sō, Sô, Sơ

  • English given name105 spellings in the group

    Most recorded in India, United States, Australia, United Kingdom

    Languages: English, German, Dutch

    Also written So, SoE, Sö, So'E, Só

  • a separate name2 spellings in the group

    Also written So

  • a separate given name36 spellings in the group

    Most recorded in India, Vietnam, United States, United Kingdom

    Also written So, Số, Sở, Ṧỗ, Šo

2 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)
1970198019902000Seo Jung-won, b. 1970Seo Yea-ji, b. 1990Seohyun, b. 1991
  • Seo Jung-wonb. 1970KRnot in their usual nameSouth Korean footballer
  • Seo Yea-jib. 1990KRnot in their usual nameSouth Korean actress
  • Seohyunb. 1991KRnot in their usual nameSouth Korean singer and actress

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)

No register attests this spelling yet

None of the official registers or reference works in our corpus lists Sŏ under this spelling. The statistics on this page rest on person records, and the related names are inferred from the name graph.

Frequently asked questions

What does the name Sŏ mean, and where does it come from?
From Middle English so, swo, zuo, swa, swe, from Old English swā, swǣ, swē (“so, as, the same, such, that”), from Proto-West Germanic *swā, from Proto-Germanic *swa, *swē (“so”), from Proto-Indo-Europ… Recorded by 국립국어원 외래어 표기 용례 자료 (NIKL loanword/foreign-name transcription examples) and Digital Pāḷi Dictionary and 5 other sources.
Which countries have the most people with the surname Sŏ?
In South Korea, the national register counted about 54 thousand people named 소, more than in any other country we hold. After it come United States, North Korea, Brazil and Netherlands; the country table on this page ranks them.
How common is the name Sŏ?
In the United States, the national register counted 7,456 people named Sŏ in 2010, about 1 in 45 thousand residents.
How common is Sŏ compared with other names?
In South Korea, Sŏ is the 56th most common surname of 14,133 surnames recorded there.

What do you want to know about Sŏ?

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Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/s%C5%8F

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, “Sŏ” — the 56th most common surname in South Korea. Data snapshot 2026-10-13.

See how Sŏ parses inside a full name →