•
Pier Leoni (died 1128), son of the Jewish convert Leo de Benedicto and founder of the Roman family of the
Pierleoni •
Jacob Jehudah Leoni (1603-1675), Jewish Dutch scholar, translator of the Psalms, and expert on heraldry, of Sephardic descent •
Adolfo Leoni (1917—1970), Italian professional road bicycle racer •
Anilza Leoni (1933–2009), Brazilian actress, singer, ballerina and painter, of Italian descent •
Atossa Leoni (born 1977), German actress •
Bruno Leoni (1913–1967), Italian political philosopher (classical liberalism) and lawyer •
Carlo Leoni (historian) (1812–1872), Italian historian and epigraphist • Carlos Leoni, founder and former member of the Brazilian pop-rock band
Kid Abelha •
Carlo Leoni (politician) (born 1955), Italian politician •
David Leoni (born 1982), English Olympic Games biathlete •
Demetris Leoni (born 1977), Cypriot retired goalkeeper and goalkeeping coach •
Dindigul I. Leoni (born 1954), Indian school teacher, orator, social debates anchor •
Domenico Leoni,
magister militum of Venice in 737, of Byzantine origin •
Elio Leoni Sceti (born 1966), Italian businessman and an investor in early-stage companies •
Endrio Leoni (born 1968), Italian road bicycle racer •
Ezio Leoni (1927-2015), "Maestro", Italian composer, arranger, orchestra conductor, producer and A&R Executive •
Franco Leoni (1864–1949), Italian opera composer (L'Oracolo) •
Frank Leoni (born 1968), American college baseball coach •
Giacomo Leoni (1686–1746), Italian architect, also known as James Leoni •
Gianni Leoni, Italian motorcycle racer •
Giorgio Leoni (born 1950), Sammarinese professional football manager •
Giovanni Leoni (born 2006), Italian professional football player •
Giovanni Antonio Leoni (17th century), Roman violinist and composer •
Guido Leoni (1915-1951), Italian Grand Prix motorcycle road racer •
Guglielmo da Leoni (1664–c. 1740), Italian painter and engraver •
Johnny Leoni (born 1984), Swiss goalkeeper football player •
Kerrin Leoni (born 1979 or 1980), New Zealand politician •
Lamberto Leoni (born 1953), former racing driver from Italy •
Leone Leoni (1509–1590), Italian Renaissance sculptor and medallist (or his son Pompeo) •
Leone Leoni (composer) (c. 1560 – 1627), Italian composer and
Maestro di cappella •
Lodovico Leoni (1531–1606), Italian painter, mainly active in Rome •
Matheus Leoni (born 1991), Brazilian defender football player •
Michael Leoni, (c. 1750–1797) stage name of Myer Lyon, English-German-Jewish tenor singer •
Lodovico Leoni (1531–1606), Italian painter, father of •
Ottavio Leoni (1578–1630), Italian painter, son of Lodovico •
Nestore Leoni (1862–1947), Italian painter and illuminator of manuscripts (miniatore) •
Neva Leoni (born 1992), Italian actress •
Paolo Leoni (died 1590), Roman Catholic Bishop of Ferrara •
Pier Leoni, Medieval Roman consul •
Pietro Leoni (1909–1995), Jesuit priest from Italy who later worked in the Soviet Union •
Pietro Leoni (bishop) (1637–1697). Roman Catholic Bishop of Ceneda (1667–1691) and Bishop of Verona •
Raúl Leoni (1905–1972), President of Venezuela from 1964 until 1969, of Italian descent •
Roberto Leoni, Italian screenwriter and film director •
Stéphane Léoni (born 1976), French former footballer •
Téa Leoni (born 1966), American actress of Italian descent •
Théo Leoni (born 2000), Belgian footballer •
Tommaso Leoni (born 1991), Italian snowboarder, specializing in snowboard cross == See also ==