Sayoko
given name · Latin script
A female name· listed as female by the registers that count names by sex
(measured from records)Officially recorded in 6 countries · latest register: Þjóðskrá Íslands, 2026
/zɐjoku/(machine-generated) Portuguese · model-generated
Sayoko is a female given name written in the Latin script, with more bearers in the United States than in any other country.
- ISIceland1 in 351K(measured from records)
- USUnited States1 in 1.2M
- BRBrazil1 in 2M
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.
- United States (measured from records)
- Record sources
- 25 (measured from records)
- 1 in 351K (inferred from the name graph)
271 people, 2020
corpus datasets behind its best-documented spelling
strongest: highest-authority source
Iceland
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.
Attested in 1 language in the etymology graph.
Where in the world
(measured from records)Sayoko 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 | |||
|---|---|---|---|---|---|
| US United States | 271 | 1 in 1.2M | 270 | Sayoko | 13 |
| BR Brazil | 107 | 1 in 2M | 129 | Sayoko | 25 |
| SE Sweden | 3 | 1 in 3.4M | 3 | — | — |
| IS Iceland | 1 | 1 in 351K | 1 | — | — |
| AR Argentina | — | — | 4 | Sayoko | 8 |
| SV El Salvador | — | — | — | Sayoko | 1 |
271 people counted by Census Bureau — First Name Frequency 2020 by sex, 2020. 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: IBGE — names by decade (Kaggle mirror); Brasil.IO genero-nomes (IBGE Censo 2010 mirror, CC-BY-SA); Census Bureau — First Name Frequency 2020 by sex; RENAPER — births 1922–2015 (Kaggle mirror); Skatteverket — Sök hur många som har ett visst namn (living population); Þjóðskrá Íslands — Name frequencies (NafnTíðni, registry). 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).
Notable people with this name
(measured from records)- Sayoko Erib. 1945JPJapanese artist (1945–2007)
- Sayoko Nobutab. 1946JPJapanese psychologist
- Sayoko Ninomiyab. 1948JPJapanese actor and seiyū
- Sayoko Yamaguchib. 1949JPJapanese model and actress (1949-2007)
- Yuki Katsuragib. 1949JPnot in their usual nameJapanese singer and songwriter (1949-2022)
- Sayoko Makinob. 1958JPJapanese actress
- Sayoko Hagiwarab. 1962JPJapanese actress
- Sayoko Mitab. 1969JPTV sports announcer
- Sayoko Ohashib. 1985JPJapanese idol
- Sayoko Izumib. 1988JPJapanese singer-songwriter and actor
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)A formal English salutation is built on the surname, so it needs a full name — on its own, a first name only supports the informal form.
Evidence
(measured from records)11 registers and reference works attest this spelling, across 6 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| US United States | Census Bureau — First Name Frequency 2020 by sex | 2020 | 270 | #31,546 |
| BR Brazil | Brasil.IO genero-nomes (IBGE Censo 2010 mirror, CC-BY-SA) | — | 129 | #18,879 |
| BR Brazil | IBGE — Nomes (census name API) | — | 115 | #33,871 |
| BR Brazil | IBGE — names by decade (Kaggle mirror) | 2022 | 107 | — |
| BR Brazil | IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname) | — | 105 | #39,365 |
| BR Brazil | IBGE — names by decade (Kaggle mirror) | 1950 | 82 | — |
| BR Brazil | IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname) | 1940 | 49 | — |
| BR Brazil | IBGE — names by decade (Kaggle mirror) | 1940 | 33 | — |
| BR Brazil | IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname) | 1950 | 25 | — |
| BR Brazil | IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname) | 1930 | 21 | — |
| BR Brazil | IBGE — names by decade (Kaggle mirror) | 1930 | 12 | — |
| US United States | SSA — National Baby Names (1880–present) | 1919 | 8 | — |
Reference works 1
- Wikipedia given-name tokens
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
- How do you pronounce Sayoko?
- In Portuguese /zɐjoku/. Transcriptions are machine-generated except where a dictionary is named.
- In which country does Sayoko have the most bearers?
- In the United States, the national register counted about 271 people named Sayoko, more than in any other country we hold, where it is most often spelled sayoko.
- Where is Sayoko most common?
- Measured as a share of residents rather than as a count, Sayoko is densest in Iceland — about 1 in 351 thousand people — even though United States holds more of our records for it.
- Is Sayoko a male or female name?
- Sayoko is a female name. National registers that list it by sex list it as female: United States (Census Bureau, 2020) and Brazil (Brasil.IO genero-nomes (IBGE Censo 2010 mirror, CC-BY-SA)).
- How common is the name Sayoko?
- In the United States, the national register counted 271 people named Sayoko in 2020, about 1 in 1.2 million residents.
What do you want to know about Sayoko?
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/sayokoThe 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, “Sayoko”. Data snapshot 2026-10-13.