Leoni is an italian surname, literally meaning "lions", and can refer to:
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
Carlos Leoni, founder and former member of the Brazilian pop-rock band Kid Abelha
Domenico Leoni, Venetian statesman of Byzantine origin
Endrio Leoni (born 1968), Italian road bicycle racer
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
Leone Leoni (1509–1590), Italian Renaissance sculptor and medallist (or his son Pompeo)
Leone Leoni (composer) (c. 1560 – 1627), Italian composer
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
Pier Leoni, Medieval Roman consul
Raúl Leoni (1905–1972), President of Venezuela from 1964 until 1969, of Italian descent
Téa Leoni (born 1966), American actress of Italian descent
It may also refer to:
Leoni (film)
Leoni Township, Michigan
Leoni (Bavaria) (formerly Assenbuch) in Bavaria
Leoni Cables, formerly Leonische Drahtwerke, cable firm from Germany