Oesi
surname · Latin script
Recorded for both men and women· direction only, no split published
Oesi is a surname written in the Latin script, with more bearers in South Africa than in any other country.
- ZASouth Africa≈1 in 822K(inferred from the name graph)
- FIFinland1 in 242Kas Osi
- ATAustria≈1 in 377Kas Ösi
carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). Where a country counts another spelling of the name rather than Oesi itself, the figure is that spelling’s, and it is named. One hue, darker where it is more common; hover a country for its figure.
- South Africa (inferred from the name graph)
- Sources
- 100 (measured from records)
- ≈1 in 822K (inferred from the name graph)
≈69 people, est.
Highest-authority source
South Africa, est.
measured from records inferred from the name graph
Spellings & scripts(measured from records)
Locally spelled Osi in NG Nigeria, IN India, CH Switzerland and Ösi in AT Austria.
Spellings marked ● are how people bearing the name write it in our records, and ○ marks a model's transliteration; click a spelling to open its page.
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)
Oesi 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 | ||||
|---|---|---|---|---|---|---|
| ZA South Africa | — | ≈69 est. | ≈1 in 822K | — | Oesi | 6 |
| AT Austria | — | ≈23 est. | ≈1 in 377K | — | Ösi | 10 |
| FI Finland | — | 23as Osi | 1 in 242K | 23 | — | — |
| IN India | — | 20as Osi | 1 in 66M | 20 | Osi | 6 |
| AR Argentina | — | 20as Osi | 1 in 2.3M | 20 | — | — |
| CH Switzerland | — | 18as Osi | 1 in 467K | 18 | Osi | 3 |
| DK Denmark | — | 8as Osi | 1 in 734K | 8 | — | — |
| NG Nigeria | #110 | — | — | — | Osi | 45 |
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: DVV — Nimipalvelu (Finnish name service, per-name lookup); Instate — India surnames (clean spellings) from electoral rolls; RENAPER — Apellidos (person counts, national); BFS — Familiennamen der Wohnbevölkerung (surnames); Danmarks Statistik — Hvor mange hedder...? (living-population name counts). 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).
Evidence(measured from records)
No register attests this spelling yet
Frequently asked questions
- In which country does Oesi have the most bearers?
- Mondonomo estimates about 69 people named Oesi in South Africa, more than in any other country we hold, where it is most often spelled oesi.
- How common is the name Oesi?
- In Finland, the national register counted 23 people named Osi, about 1 in 242 thousand residents.
- How common is Oesi compared with other names?
- In Nigeria, Oesi is the 110th most common surname of 346,007 surnames recorded there.
What do you want to know about Oesi?
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/oesiThe 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, “Oesi” — the 110th most common surname in Nigeria. Data snapshot 2026-10-10.