Koide
surname · Latin script
(measured from records)Officially recorded in 5 countries · latest register: dane.gov.pl, 2026
/kojde/(machine-generated) Portuguese · model-generated
Koide is a surname written in the Latin script, with more bearers in Brazil than in any other country: 492 people, counted by IBGE.
- BRBrazil1 in 430K(measured from records)
- CHSwitzerland1 in 1.1M
- USUnited States1 in 1.6M
carrying the name, as counted by each country's national register. 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.
- Brazil (measured from records)
- Record sources
- 116 (measured from records)
- 1 in 430K (inferred from the name graph)
492 people
corpus datasets behind its best-documented spelling
strongest: highest-authority source
Brazil
measured from records inferred from the name graph
How to pronounce Koide
- Portuguese:/kojde/(machine-generated) model-generated
Readings marked model-generated were transcribed by a model; the others are quoted from the dictionary named.
Meaning & origin
No verified etymology recorded for this name yet — the entries below are drawn from usage statistics and the name graph.
Attested across 2 languages in the etymology graph.
Where the surname Koide is found
(measured from records)Koide 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.
| Country | Most common spelling | Sources | |||
|---|---|---|---|---|---|
| BR Brazil | 492 | 1 in 430K | 492 | — | — |
| US United States | 213 | 1 in 1.6M | 225 | Koide | 116 |
| CH Switzerland | 8 | 1 in 1.1M | 8 | — | 1 |
| PL Poland | 7 | 1 in 5.5M | 4 | — | — |
| AU Australia | — | — | — | Koide | 14 |
| TN Tunisia | — | — | — | Koide | 1 |
492 people counted by IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname). 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; Census Bureau — Surname Frequency 2020; IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname); BFS — Familiennamen der Wohnbevölkerung (surnames); dane.gov.pl — PESEL living persons (surnames). 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)Koide is also recorded in one other lexicon, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.
In Estonian, genitive plural of koi
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)- Narashige Koideb. 1887JPJapanese painter and illustrator (1887-1931)
- Yoshio Koideb. 1939JPJapanese long-distance runner, coach
- Hiroaki Koideb. 1949JPJapanese nuclear scientist (1949-)
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
(machine-generated)Evidence
(measured from records)10 registers and reference works attest this spelling, across 5 countries.
Register rows as of the 2026-10-09 data build.
Frequently asked questions
- How do you pronounce Koide?
- In Portuguese /kojde/. Transcriptions are machine-generated except where a dictionary is named.
- Which countries have the most people with the surname Koide?
- In Brazil, the national register counted about 492 people named Koide, more than in any other country we hold. After it come United States, Switzerland and Poland; the country table on this page ranks them.
- Where is Koide most common?
- Koide is densest in Brazil, where the national register counts about 1 in 430 thousand people carrying it.
- How common is the name Koide?
- In Brazil, the national register counted 492 people named Koide, about 1 in 430 thousand residents.
What do you want to know about Koide?
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/koideThe 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, “Koide” — ranked 17354th in Brazil (IBGE). Data snapshot 2026-10-13.