Koyo
given name · Latin script
Recorded for both men and women· direction only, no split published
Koyo is a given name written in the Latin script, with more bearers in Japan than in any other country.
- JPJapan≈1 in 27K(inferred from the name graph)
- GAGabon≈1 in 217K
- AUAustralia≈1 in 2.2M
carrying the name, as Mondonomo estimates it from our sources: no national register counts it in these countries. One hue, darker where it is more common; hover a country for its figure.
- Japan (inferred from the name graph)
- Sources
- 57 (measured from records)
- ≈1 in 27K (inferred from the name graph)
≈4,700 people, est.
Highest-authority source
Japan, est.
measured from records inferred from the name graph
Meaning & origin
No verified etymology recorded for this name yet — the entries below are drawn from usage statistics and the name graph.
Where in the world(measured from records)
Koyo 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.
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: the us-wru-surnames-voterfile register; Ministere de l'Interieur — 2025 candidate lists (local + legislative); Familienaam.be — Belgian family-name frequency (population register); SA BDM — Popular baby names South Australia (1944–present). 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 recorded senses(measured from records)
Koyo is also recorded in 3 other lexicons, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.
In Filipino, plaster; bandage (especially those applied for boils and wounds)
as a wordkaikki.org Wiktionary extract (IPA + transliterations)
In Javanese, nonstandard spelling of kaya
as a wordkaikki.org Wiktionary extract (IPA + transliterations)
In nht, coyote
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.
Notable people with this name(measured from records)
- Ozaki Kōyōb. 1868JPJapanese writer (1868-1903)
- Kōyō Okadab. 1895JPJapanese photographer (1895–1972)
- Kōyō Kageyamab. 1907JPJapanese photographer
- Kōyō Kawanishib. 1959JPJapanese dentist, amateur astronomer
- Koyo Kouohb. 1967CMCameroonian and Swiss curator
- Koyo Hoshikawab. 1989JPJapanese Go player
- Shimanoumi Kōyōb. 1989JPSumo wrestler (1989-)
- Kōyō Aoyagib. 1993JPJapanese baseball player
- Kōyō Katōb. 1995JPJapanese announcer
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)
Attested in 11 sources across 9 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| GA Gabon | Ministere de l'Interieur — 2025 candidate lists (local + legislative) | 2025 | 6 | #89 |
| BE Belgium | Familienaam.be — Belgian family-name frequency (population register) | 2008 | 1 | #171,103 |
| US United States | wru Name Dictionary — US surnames, voter-file supplement (Khanna et al.) | — | — | — |
Reference works 2
- Wikidata name items (native-script + romanized given/family names)
- Ethiopian name tokens (GitHub lehagere/ethiopian-names, 40/60 condominium list)
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
- Is Koyo a male or female name?
- Koyo is recorded for both men and women. We don't publish a percentage split: a record's gender belongs to the person and is attached to every given name on that record, so names in cultures where a name string also carries a parent's or spouse's given name pick up large cross-gender counts.
- In which country does Koyo have the most bearers?
- Mondonomo estimates about 4.7 thousand people named Koyo in Japan, more than in any other country we hold, where it is most often spelled koyo.
- How common is the name Koyo?
- Mondonomo estimates about 4,700 people in Japan have Koyo as their first given name, about 1 in 27 thousand residents. No national register counts it there; the figure is ours, calibrated against the registers that do.
What do you want to know about Koyo?
Nobody replies to these one by one, but what readers ask decides what these pages answer next.
Query this name via API
curl https://api.mondonomo.ai/api/v1/name-graph/koyoThe same payload this page is built from: spellings and scripts, countries and languages, related names, and the registers that attest the form. Rate-limited for casual use; a free API key gives 1,000 requests a day, and bulk access is licensed separately.
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, “Koyo”. Data snapshot 2026-10-10.