Iwasa
surname · Latin script
Recorded as a male name· opposite-gender records fall within measured source noise
/iwɑsɑ/(machine-generated) pronunciation, model-generated
Iwasa is a surname written in the Latin script, most frequently recorded in Japan. Recorded meaning: Borrowed from Japanese 岩佐 (Iwasa).
- JPJapan
- USUnited States
- CACanada
Where the name is found, darker where our sources hold more of it. No national register counts its bearers anywhere we hold data, so the map carries no figures. One hue, darker where it is more common; hover a country for its figure.
Meaning & origin(measured from records)
Borrowed from Japanese 岩佐 (Iwasa).
Sources 1
Attested across 3 languages in the etymology graph.
Where in the world(measured from records)
Recorded in:
- JPJapan
- USUnited States
- BRBrazil
- CACanada
- ARArgentina
No national register we accept counts this name’s bearers, so the page lists where it is found and publishes no figure.
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)
- 岩佐又兵衛b. 1578JPnot in their usual nameJapanese artist (1578-1650)
- Kei Iwasab. 1878JPJapanese Go player
- Ujitoshi Iwasab. 1911JPJapanese screenwriter
- Miyoko Iwasab. 1926JPJapanese literary scholar
- Hisaya Iwasab. 1934JPJapanese film director (1934-2013)
- Emi Iwasab. 1939JPJapanese politician
- Nao Iwasab. 1954JPJapanese poet (born 1954)
- Yoshihito Iwasab. 1954JPJapanese politician (1954-)
- Mayuko Iwasab. 1987JPJapanese gravure idol
- Misaki Iwasab. 1995JPJapanese idol and member of the idol group AKB48
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)
Attested in 14 sources across 7 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| EE Estonia | Siseministeerium — population register name list 2023 | 2023 | — | — |
Reference works 2
- Wikipedia surname tokens
- Wikidata name items (native-script + romanized given/family names)
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 Iwasa mean, and where does it come from?
- Borrowed from Japanese 岩佐 (Iwasa). Recorded by Wiktionary.
- How do you pronounce Iwasa?
- A machine transcription gives /iwɑsɑ/ (IPA) for Japanese.
- In which country does Iwasa have the most bearers?
- Iwasa is most frequently recorded in Japan.
What do you want to know about Iwasa?
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/iwasaThe 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, “Iwasa”. Data snapshot 2026-10-10.