Ки

surname · Cyrillic script

Recorded for both men and women· direction only, no split published

Ки is a surname written in the Cyrillic script, with more bearers in the United States than in any other country.

rarermore common
  • RURussia≈1 in 1.1M(inferred from the name graph)
  • USUnited States1 in 9.9Kas Key
  • NLNetherlands1 in 63Kas Kee

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 Ки 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.

United States (measured from records)

33,501 named Key, 2010

2 (measured from records)

recorded for this name

Sources
77 (measured from records)

Highest-authority source

≈1 in 1.1M (inferred from the name graph)

Russia, est.

measured from records inferred from the name graph

Name dossier (print, CSV)

Spellings & scripts(measured from records)

КиCyrillic(measured from records)
KeeLatin(measured from records)

5 other spellings are counted as the same name:

Locally spelled Kee in US United States.

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

съкрат. от Янаки(я), Йордаки или друго подобно име. Акев и Акьдв: ф. Бабяк (Пловдивско), Пловдив, Враца.

Sources 1

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

Attested across 24 languages in the etymology graph.

Where in the world(measured from records)

Ки 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 Ки is recorded, by country
CountryMost common spellingSources
US United States33,501as Key1 in 9.9K34KKee27
NL Netherlands274as Kee1 in 63K322—1
RU Russia≈130 est.≈1 in 1.1M—Ки77
BR Brazil114as Ki1 in 1.9M114——
ES Spain90as Key1 in 556K90—1
NO Norway54as Key1 in 101K54—1
FI Finland36as Key1 in 155K83—1
GY Guyana2as Kee1 in 375K2——

33,501 people counted by Census Bureau — Surname Frequency 2010, 2010, counting the spelling key. 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: Census Bureau — Surname Frequency 2010; CBG Familienamenbank — Dutch surname bearer counts (GBA/BRP 2007); Meertens NVB — Nederlandse Voornamenbank (all-time BRP bearer counts, 2018); IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname); INE — Padrón per-token widgets (current living counts, given + apellidos); INE — Apellidos más frecuentes (Padrón Municipal); DVV — Nimipalvelu (Finnish name service, per-name lookup); SSB — Navnesøk (name-search service, living population); Guyana — Official List of Electors July 2025. 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)

Ки is also recorded as 2 other names, grouped separately because the records behind them do not connect to the one described above.

  • Bulgarian name26 spellings in the group

    Also written Ki, Cult, Kì, Kī, Kî

  • a separate name3 spellings in the group

    Also written Ki, Kí

4 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.

Other recorded senses(measured from records)

Ки is also recorded in 6 other lexicons, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.

  • In rsk, only used in ки ци (ki ci) and ки то (ki to)

    as a wordkaikki.org Wiktionary extract (IPA + transliterations)

  • In Tajik, that; subordinates a clause to a main clause

    as a wordkaikki.org Wiktionary extract (IPA + transliterations)

  • In kv, arm, hand

    as a wordkaikki.org Wiktionary extract (IPA + transliterations)

  • In mdf, road, way

    as a wordkaikki.org Wiktionary extract (IPA + transliterations)

  • In myv, way, road

    as a wordkaikki.org Wiktionary extract (IPA + transliterations)

  • In koi, hand

    as a wordkaikki.org Wiktionary extract (IPA + transliterations)

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.

Evidence(measured from records)

No register attests this spelling yet

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

Register rows as of the 2026-10-09 data build.

Frequently asked questions

In which country does Ки have the most bearers?
In the United States, the national register counted about 34 thousand people named Key, more than in any other country we hold.
How common is the name Ки?
In the United States, the national register counted 33,501 people named Key in 2010, about 1 in 9.9 thousand residents.

What do you want to know about Ки?

Nobody replies to these one by one, but what readers ask decides what these pages answer next.

Please leave out anyone's personal details (see Privacy).

Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/%D0%BA%D0%B8

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, “Ки”. Data snapshot 2026-10-10.

See how Ки parses inside a full name →