Dell'Olio
surname · Latin script
Meaning: Louis, US fashion designer
Recorded as a female name· opposite-gender records fall within measured source noise
Dell'Olio is a surname written in the Latin script, with more bearers in Italy than in any other country.
- USUnited States1 in 803K(measured from records)
- ITItaly≈1 in 51K
- ARArgentina1 in 583K
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.
- Italy (inferred from the name graph)
- Sources
- 121 (measured from records)
- ≈1 in 51K (inferred from the name graph)
≈1,200 people, est.
Highest-authority source
Italy, est.
measured from records inferred from the name graph
Spellings & scripts(measured from records)
One other spelling is counted as the same name:
Locally spelled Dellolio in US United States, GB United Kingdom, AU Australia and 1 more.
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(measured from records)
Louis, US fashion designer
Sources 1
- Pronouncing Dictionary of Proper Names
Where in the world(measured from records)
Dell'Olio 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 | |||
|---|---|---|---|---|---|
| IT Italy | ≈1,200 est. | ≈1 in 51K | — | Dell'Olio | 53 |
| US United States | 414 | 1 in 803K | 414 | Dellolio | 121 |
| PK Pakistan | ≈390 est. | ≈1 in 599K | — | Dellolio | 1 |
| GB United Kingdom | ≈110 est. | ≈1 in 618K | — | Dellolio | 9 |
| AR Argentina | 78 | 1 in 583K | 78 | Dell'Olio | 11 |
| AU Australia | ≈38 est. | ≈1 in 675K | — | Dellolio | 22 |
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 — Surname Frequency 2010; RENAPER — Apellidos (person counts, national). 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)
- Donato Maria dell’Oliob. 1847ITnot in their usual nameItalian cardinal (1847-1902)
- Anselma Dell'Oliob. 1941USnot in their usual nameAmerican journalist
- Tonio Dell'Oliob. 1960ITnot in their usual nameItalian presbyter and activist
- Nancy Dell'Oliob. 1961USnot in their usual nameAmerican lawyer
- Gianmauro Dell'Oliob. 1968ITnot in their usual nameItalian politician
- Cory Dell'Oliob. 1989AUnot in their usual nameAustralian rules footballer
- Veronica Dell'Oliob. 1993ITnot in their usual nameItalian basketball player (born 1993)
- Francesco Dell'OlioITnot in their usual nameresearcher, ORCID id # 0000-0001-9874-5008
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 9 sources across 7 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| AR Argentina | RENAPER — Apellidos (person counts, national) | — | 78 | — |
| US United States | wru Name Dictionary — US surnames, voter-file supplement (Khanna et al.) | — | — | — |
Reference works 1
- Cognomix.it (Nomix s.r.l.) — Italian surname origin dictionary
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 Dell'Olio mean, and where does it come from?
- Louis, US fashion designer Recorded by Pronouncing Dictionary of Proper Names.
- In which country does Dell'Olio have the most bearers?
- Mondonomo estimates about 1.2 thousand people named Dell'Olio in Italy, more than in any other country we hold, where it is most often spelled Dell'Olio.
- How common is the name Dell'Olio?
- In the United States, the national register counted 414 people named Dell'Olio in 2010, about 1 in 803 thousand residents.
What do you want to know about Dell'Olio?
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/dell'olioThe 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, “Dell'Olio”. Data snapshot 2026-10-10.