Ryouichi

given name · Latin script

Recorded as a male name· opposite-gender records fall within measured source noise

Ryouichi is a male given name written in the Latin script, most frequently recorded in Japan.

rarermore common
  • JPJapan
  • GBUnited Kingdom
  • USUnited States

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.

Name dossier (print, CSV)

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)

Recorded in:

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)
1850190019502000Ryōichi Sasakawa, b. 1899Ryōichi Hattori, b. 1907Ryōichi Kuroda, b. 1911Ryōichi Mikitani, b. 1929Ryōichi Honda, b. 1940Ryoichi Ikegami, b. 1944Ryōichi Tanaka, b. 1947Ryoichi Kawakatsu, b. 1958Ryoichi Kimizuka, b. 1958Ryoichi Maeda, b. 1981
  • Ryōichi Sasakawab. 1899JPnot in their usual nameJapanese businessman, politician and philanthropist (1899–1995)
  • Ryōichi Hattorib. 1907JPnot in their usual nameJapanese composer (1907-1993)
  • Ryōichi Kurodab. 1911JPnot in their usual nameJapanese lawyer
  • Ryōichi Mikitanib. 1929JPnot in their usual nameJapanese economist (1929-2013)
  • Ryōichi Hondab. 1940JPnot in their usual nameJapanese politician (1940-2022)
  • Ryoichi Ikegamib. 1944JPnot in their usual nameJapanese manga artist
  • Ryōichi Tanakab. 1947JPnot in their usual nameJapanese voice actor
  • Ryoichi Kawakatsub. 1958JPnot in their usual nameJapanese association football player and manager
  • Ryoichi Kimizukab. 1958JPnot in their usual nameJapanese screenwriter and director
  • Ryoichi Maedab. 1981JPnot in their usual nameJapanese association football player

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)

1 register or reference work attests this spelling, across 0 countries.

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

What are other forms of the name Ryouichi?
In the etymology graph, Ryoichi is a form of the same name in other languages.
Is Ryouichi a male or female name?
Ryouichi is a male name in our records. Opposite-gender entries fall within the cross-gender noise we measure in the source data, so we don't report them as usage.
In which country does Ryouichi have the most bearers?
Ryouichi is most frequently recorded in Japan.

What do you want to know about Ryouichi?

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Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/ryouichi

The 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, “Ryouichi”. Data snapshot 2026-10-13.

See how Ryouichi parses inside a full name →