Ruisi
surname · Latin script
Recorded as a female name· opposite-gender records fall within measured source noise
Ruisi is a surname written in the Latin script, with more bearers in the United States than in any other country.
- BEBelgium1 in 273K(measured from records)
- CHSwitzerland1 in 646K
- USUnited States1 in 873K
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.
- United States (measured from records)
- Sources
- 46 (measured from records)
- 1 in 273K (inferred from the name graph)
381 people, 2010
Highest-authority source
Belgium
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.
Where in the world(measured from records)
Ruisi 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 | 381 | 1 in 873K | 381 | Ruisi | 38 |
| BE Belgium | 43 | 1 in 273K | 43 | Ruisi | 5 |
| CH Switzerland | 13 | 1 in 646K | 13 | — | 2 |
| ES Spain | 9 | 1 in 5.6M | 9 | — | 4 |
| IT Italy | ≈2 est. | ≈1 in 35M | listed | Ruisi | 46 |
381 people counted by Census Bureau — Surname Frequency 2010, 2010. 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: the xinhua-italian-manual register; Census Bureau — Surname Frequency 2010; Familienaam.be — Belgian family-name frequency (population register); BFS — Familiennamen der Wohnbevölkerung (surnames); INE — Padrón per-token widgets (current living counts, given + apellidos). 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)
- Pietro Ruisib. 1955ITItalian footballer
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)
Attested in 13 sources across 8 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| US United States | Census Bureau — Surname Frequency 2010 | 2010 | 381 | #54,178 |
| US United States | Census Bureau — Surname Frequency 2000 | 2000 | 337 | #56,687 |
| US United States | Census Bureau — Surname Frequency 2020 | 2020 | 335 | #64,212 |
| BE Belgium | Familienaam.be — Belgian family-name frequency (population register) | 2008 | 43 | #29,238 |
| CH Switzerland | BFS — Familiennamen der Wohnbevölkerung (surnames) | 2024 | 13 | #50,156 |
| ES Spain | INE — Padrón per-token widgets (current living counts, given + apellidos) | — | 9 | #126,713 |
| IT Italy | 意大利语姓名译名手册 (Xinhua Italian Name Manual) | — | — | — |
| US United States | wru Name Dictionary — US surnames, Census 2010 subset (Khanna et al.) | — | — | — |
Reference works 2
- Nederlandse FamilienamenBank (Dutch surname bank; ex-Meertens Instituut, now CBG)2007
- 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
- In which country does Ruisi have the most bearers?
- In the United States, the national register counted about 381 people named Ruisi, more than in any other country we hold, where it is most often spelled ruisi.
- Where is Ruisi most common?
- Measured as a share of residents rather than as a count, Ruisi is densest in Belgium — about 1 in 273 thousand people — even though United States holds more of our records for it.
- How common is the name Ruisi?
- In the United States, the national register counted 381 people named Ruisi in 2010, about 1 in 873 thousand residents.
What do you want to know about Ruisi?
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/ruisiThe 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, “Ruisi”. Data snapshot 2026-10-10.