This list includes 30 Italian last names that start with O, from “Occelli” to “Ottoboni”. Many of these names reflect regional dialects or occupations and often cluster in northern Italy.
Italian last names that start with O are surnames of Italian origin that begin with the letter O. They often preserve regional speech and family histories; for example, the Ottoboni family appears in Venetian records.
Below you’ll find the table with Surname, Meaning, Region, Notable people, and Variants.
Surname: A clear entry of the last name as used today, helping you find the exact family form.
Meaning: Brief etymology or literal translation so you understand the name’s original sense and origin.
Region: Shows where the surname is historically most common, so you can target local records and contexts.
Notable people: Lists prominent individuals with the surname, helping you connect names to historical or cultural figures.
Variants: Presents spelling, dialectal, and diminutive forms so you recognize alternate records and related surnames.
Italian last names that start with O
| Surname | Region/Origin | Meaning (short) | Notable people |
|---|---|---|---|
| Olivetti | Piedmont | from Oliva, “olive”/olive grower | Adriano Olivetti — industrialist (1901–1960); Camillo Olivetti — engineer (1868–1943) |
| Olmi | Lombardy | elm trees | Ermanno Olmi — filmmaker (1931–2018) |
| Orlando | Sicily; Campania | from Roland (famed medieval name) | Vittorio Orlando — statesman (1860–1952) |
| Orsini | Lazio | little bears (from orso) | Orsini family — Roman noble house (medieval–modern) |
| Orsi | Emilia-Romagna; Lombardy | bears | Giuseppe Orsi — businessman (born 1945) |
| Orsato | Veneto | diminutive of orso, “little bear” | Daniele Orsato — referee (born 1975) |
| Ottaviani | Lazio | from Ottaviano, “eighth” or “Ottavianus” | Alfredo Ottaviani — cardinal (1890–1979) |
| Ottoboni | Veneto | from Ottone (Otto) | Pietro Ottoboni — cardinal (1667–1740) |
| Oddo | Abruzzo; Sicily | from Odo/Otto, “wealthy, famous” | Massimo Oddo — footballer (born 1976) |
| Orsolini | Marche; Emilia-Romagna | little Ursula (from Orsola) | Riccardo Orsolini — footballer (born 1997) |
| Occhipinti | Sicily | Sicilian nickname-derived name | Arianna Occhipinti — winemaker (born 1990) |
| Onorato | Campania; Lazio | honored, “honourable” | Vincenzo Onorato — shipowner (born 1957) |
| Onorati | Campania; Lazio | descendants of Onorato | |
| Ortolani | Marche; Emilia-Romagna | gardener (from ortolano) | Riz Ortolani — composer (1926–2014) |
| Odone | Lazio | from Odo, “wealthy, famous” | Augusto Odone — activist/inventor (1933–2013); Lorenzo Odone — patient (1978–2008) |
| Orioli | Tuscany | patronymic/locative | Pietro Orioli — painter (active 1470s) |
| Oliva | Campania; Sicily | olive (tree or fruit) | |
| Olivieri | Liguria; Campania | olive grower/keeper | |
| Orefice | Campania | goldsmith | |
| Orlandini | Tuscany; Emilia-Romagna | descendant of Orlando | Andrea Orlandini — footballer (born 1948) |
| Occhiuto | Calabria | from occhiuto, “big-eyed” or nickname | Roberto Occhiuto — politician (born 1969) |
| Occelli | Piedmont | diminutive of occhi, “eyes” (nickname) | |
| Oggioni | Lombardy | from Oggiono (place) or patronymic | |
| Oggiano | Sardinia | Sardinian patronymic/locative | |
| Osio | Lombardy | from Osio (place) or Germanic personal name | |
| Orsenigo | Lombardy | from Orsenigo (place near Como) | |
| Oleari | Lombardy; Veneto | oil-merchant or olive-oil seller | |
| Omodei | Sicily; Lombardy | from Germanic personal name Amodeus/Omodeo | |
| Orabona | Apulia (Puglia) | likely toponymic or patronymic | |
| Orsello | Campania; Lazio | diminutive of orso, “little bear” |
Descriptions
Olivetti
Ivrea-based industrial family; famous for typewriters and progressive social policies; concentrated in Piedmont and northwestern Italy.
Olmi
Surname common around Bergamo and Brescia; associated with the director Ermanno Olmi and northern Italian towns.
Orlando
Derived from the given name Orlando; widespread in southern Italy, often linked to medieval heroic traditions.
Orsini
One of Italy’s oldest noble families; many cardinals and condottieri; variants include Orsino and De Orsini.
Orsi
Short form of Orsino/Orsini; frequent in northern Italy among merchants and artisans.
Orsato
Venetian surname; held by top Serie A and international football referees.
Ottaviani
Patronymic from a Roman personal name; common in central Italy, especially around Rome.
Ottoboni
Venetian noble family active in Baroque Rome; patrons of music and the arts.
Oddo
Southern and central surname; variants include Oddi and Oddone.
Orsolini
Patronymic/diminutive of the female name Orsola; concentrated in central Italy.
Occhipinti
Strong presence in Ragusa and southeastern Sicily; well known in natural-wine circles.
Onorato
Also a common given name; surname indicates respect or sanctity; frequent in southern Italy.
Onorati
Patronymic form of Onorato; found in central-southern regions with several local variants.
Ortolani
Occupational surname from market gardening; common in Marche and Romagna.
Odone
Gained international attention through “Lorenzo’s Oil”; Italian-origin surname found in central Italy.
Orioli
Renaissance-era surname tied to the Sienese/Florentine schools; concentrated in Tuscany.
Oliva
Widespread southern surname; may indicate olive growers or place near olive groves; many regional spellings.
Olivieri
Variant of Oliva; common in coastal regions and port towns with long olive-cultivation traditions.
Orefice
Occupational surname typical of Naples and Campania; variants: Orefici, Oreficio.
Orlandini
Patronymic from Orlando; many bearers across central Italy in arts and sport.
Occhiuto
Calabrian surname found around Cosenza and Catanzaro; several politicians and local officials.
Occelli
Piedmontese surname; Occelli families appear around Turin and Cuneo with local spelling variants.
Oggioni
Common in the Lecco/Como area; toponymic surname linked to towns like Oggiono.
Oggiano
Frequent in Sardinia, especially in Nuoro province; typical island surname with distinct local history.
Osio
Northern Italian surname concentrated in Bergamo and Como provinces; toponymic and medieval roots.
Orsenigo
Toponymic surname from Brianza/Como area; several notable families in local archives.
Oleari
Occupational surname tied to oil trade; found in northern and northeastern Italy.
Omodei
Old Italian surname with noble branches in Sicily and northern Italy; variants Omodeo/Omodei.
Orabona
Southern Italian surname found around Bari and Taranto; regional spelling variations common.
Orsello
Local diminutive of Orso/Orsini; appears in Campanian and Lazio records with small family clusters.