Ко

Name: Ко: recorded bearers, distribution and rank
Creator: Mondonomo
Published: 2026-10-10

org · Cyrillic script

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

Ко is a name written in the Cyrillic script, with more bearers in Türkiye than in any other country.

rarermore common

TRTürkiye1 in 287as Koç(measured from records)
USUnited States1 in 6.7Kas Koch
BYBelarus≈1 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 Ко 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.

: Türkiye (measured from records)
: 2 (measured from records)
Sources: 132 (measured from records)
: ≈1 in 107K (inferred from the name graph)

measured from records inferred from the name graph

Name dossier (print, CSV)

Spellings & scripts(measured from records)

КохCyrillic

KochLatin

4 other spellings are counted as the same name:

Locally spelled Koch in US United States, IN India, CH Switzerland and 1 more and Кох in TR Türkiye.

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 Bulgarian

видоизменено от Христо, Илия или друго подобно име; разновидност на Ицо, Ичо. Враца, Врачанско, Ботевградско. Йков ф. Враца, Ботевград, Лозен (Софийско). Йковски ф. Врачеш, Литаково, Скравена (Ботевградско).

Sources 1

Ilchev — Речник на личните и фамилни имена у българите (Dictionary of Bulgarian personal + family names, БАН)

Attested across 14 languages in the etymology graph.

Where in the world(measured from records)

Ко 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 Ко is recorded, by country
Country					Most common spelling	Sources
TR Türkiye	—	286,207as Koç	1 in 287	286K	Кох	3
US United States	—	49,395as Koch	1 in 6.7K	49K	Koch	105
IN India	—	21,221as Koch	1 in 62K	21K	Koch	7
BR Brazil	—	8,865as Koch	1 in 24K	8.9K	—	—
CH Switzerland	—	8,637as Koch	1 in 973	8.6K	Koch	10
DK Denmark	—	3,427as Koch	1 in 1.7K	3.4K	—	—
CZ Czechia	#816	831as Koch	1 in 13K	835	Koch	61
NO Norway	—	778as Koch	1 in 7K	778	—	5
BY Belarus	—	≈89 est.	≈1 in 107K	—	Ко	11

286,207 people counted by TÜİK NIP — most used surnames, 2025, counting the spelling koç. 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: TÜİK NIP — most used surnames; Census Bureau — Surname Frequency 2010; Instate — India surnames (clean spellings) from electoral rolls; IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname); BFS — Familiennamen der Wohnbevölkerung (surnames); Danmarks Statistik — Hvor mange hedder...? (living-population name counts); MVČR — living population register 2017; KdeJsme.cz — četnost jmen a příjmení (MVČR population register front-end); SSB — Navnesøk (name-search service, living population). 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)

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

Uzbek surname4 spellings in the group
Most recorded in Uzbekistan, Kazakhstan
Also written Ko, Kố, Kồ
Bulgarian surname27 spellings in the group
Most recorded in Bulgaria, North Macedonia, United States, Croatia
Languages: Bulgarian, Macedonian, Croatian
Also written Ko, Kö, Kó, Kő, ́ko
Kazakh surname5 spellings in the group
Most recorded in Kazakhstan
Also written Ko
Mongolian name2 spellings in the group
Also written Ko

3 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)

Jumongb. 58not in their usual nameFounder of the Goguryeo Empire (37–19 BC)
Gwanggaeto the Greatb. 374CNnot in their usual nameKing of the Goguryeo dynasty of Korea (374–413) (r. 391–413)
Go Doo-shimb. 1951KRnot in their usual nameSouth Korean actress
Ko Young-heeb. 1952KPnot in their usual nameConsort of North Korean supreme leader Kim Jong Il (1952–2004)
Go Hyeon-jeongb. 1971KRnot in their usual nameSouth Korean actress
Go Soo-heeb. 1976KRnot in their usual nameSouth Korean actress
Ko Kyeong-pyob. 1990KRnot in their usual nameSouth Korean actor
Go Arab. 1990KRnot in their usual nameSouth Korean actress
Ko A-sungb. 1992KRnot in their usual nameSouth Korean actress, South Korean former child actress
Go Younjungb. 1996KRnot in their usual nameSouth Korean actress and model (born 1996)

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 Ко 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

In which country does Ко have the most bearers?: In Türkiye, the national register counted about 286 thousand people named Koç, more than in any other country we hold.
How common is the name Ко?: In Türkiye, the national register counted 286,207 people named Koç in 2025, about 1 in 287 residents.
How common is Ко compared with other names?: In Czechia, Ко is the 816th most common surname of 114,573 surnames recorded there.

What do you want to know about Ко?

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/%D0%BA%D0%BE

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 2026-10-10 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, “Ко” — the 816th most common surname in Czechia. Data snapshot 2026-10-10.

See how Ко parses inside a full name →

Spellings & scripts●(measured from records)

Meaning & origin●(measured from records)

Where in the world●(measured from records)

Other names spelled this way◐(inferred from the name graph)

Notable people with this name●(measured from records)

Evidence●(measured from records)