Reiko
given name · Latin script
Meaning: ‘Courteous child’; ‘beautiful child’
Recorded for both men and women· direction only, no split published
/ɹɛɪkoʊ/(machine-generated) pronunciation, model-generated
Reiko is a given name written in the Latin script, with more bearers in Japan than in any other country.
- JPJapan≈1 in 1.5K(inferred from the name graph)
- USUnited States1 in 153K
- EEEstonia≈1 in 11K
carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). One hue, darker where it is more common; hover a country for its figure.
- Japan (inferred from the name graph)
- Sources
- 193 (measured from records)
- ≈1 in 1.5K (inferred from the name graph)
≈83,000 people, est.
Highest-authority source
Japan, est.
measured from records inferred from the name graph
Meaning & origin(measured from records)
‘Courteous child’; ‘beautiful child’.
Sources 1
- A concise dictionary of first names
Attested in 1 language in the etymology graph.
Where in the world(measured from records)
Reiko 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 | ||||
|---|---|---|---|---|---|---|
| JP Japan | #242 | ≈83,000 est. | ≈1 in 1.5K | — | Reiko | 133 |
| CN China | — | ≈9,600 est. | ≈1 in 145K | — | Reiko | 10 |
| US United States | — | 2,168 | 1 in 153K | 2.1K | Reiko | 193 |
| ID Indonesia | — | ≈660 est. | ≈1 in 406K | listed | Reiko | 32 |
| EG Egypt | — | ≈340 est. | ≈1 in 310K | — | Reiko | 7 |
| HK Hong Kong | — | ≈140 est. | ≈1 in 53K | — | Reiko | 11 |
| EE Estonia | — | ≈120 est. | ≈1 in 11K | 172 | Reiko | 13 |
| SG Singapore | — | ≈75 est. | ≈1 in 83K | — | Reiko | 12 |
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 — First Name Frequency 2020 by sex; the id-github-names register; the ee-stat-nimed register. 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)
Reiko 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.
Bambina graziosa
as a nameIl grande libro dei nomi per bebè. Significato, origini, curiosità. Oltre 7000 nomi per bambine e bambini Significato,…
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)
- Reiko Satob. 1931USAmerican actress (1931-1981)
- Reiko Danb. 1935JPactress (1935-2003)
- Reiko Suzukib. 1944JPJapanese voice actress
- Reiko Oshidab. 1948JPJapanese actress and singer (1948-)
- Reiko Ikeb. 1953JPJapanese actress
- Rei Sakumab. 1965JPnot in their usual nameJapanese voice actress
- Reiko Hayamab. 1969JPJapanese actress
- Reiko Aylesworthb. 1972USAmerican actress
- Reiko Chibab. 1975JPJapanese actress and singer
- Reiko Morib. 1986JPJapanese actress (1986-)
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)
Attested in 38 sources across 23 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| US United States | Census Bureau — First Name Frequency 2020 by sex | 2020 | 2.1K | #7,118 |
| EE Estonia | Statistics Estonia — per-name Population Register counts (nimed) | — | 172 | #531 |
| US United States | Census Bureau — First Name Frequency 2020 by sex | 2020 | 83 | #7,118 |
| US United States | SSA — National Baby Names (1880–present) | 1975 | 23 | — |
| US United States | SSA — National Baby Names (1880–present) | 1972 | 21 | — |
| US United States | SSA — National Baby Names (1880–present) | 2023 | 9 | — |
| US United States | SSA — National Baby Names (1880–present) | 2021 | 7 | — |
| EE Estonia | Siseministeerium — population register name list 2023 | 2023 | — | — |
| ID Indonesia | KPU voter-roll name tokens (GitHub) | — | — | — |
Reference works 2
- Dictionary of American Family Names
- 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
- What does the name Reiko mean, and where does it come from?
- ‘Courteous child’; ‘beautiful child’. Recorded by A concise dictionary of first names.
- How do you pronounce Reiko?
- A machine transcription gives /ɹɛɪkoʊ/ (IPA) for Japanese.
- Is Reiko a male or female name?
- Reiko 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 Reiko have the most bearers?
- Mondonomo estimates about 83 thousand people named Reiko in Japan, more than in any other country we hold, where it is most often spelled reiko.
- How common is the name Reiko?
- In the United States, the national register counted 2,168 people named Reiko in 2020, about 1 in 153 thousand residents.
- How common is Reiko compared with other names?
- In Japan, Reiko is the 242nd most common given name of 366,905 given names recorded there.
What do you want to know about Reiko?
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/reikoThe 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, “Reiko” — the 242nd most common given name in Japan. Data snapshot 2026-10-10.