Bonanni is an Italian surname derived from the medieval given name Bonanno, meaning . Notable people with the surname include:
Ángel Bonanni (born 1972), Uruguayan-Israeli actor and model Bret Bonanni (born 1994), American water polo player Claudio Bonanni (born 1997), Italian footballer Filippo Bonanni (1638–1723), Italian Jesuit scholar and conchologist Laudomia Bonanni (1907–2002), Italian writer and journalist Mariángela Bonanni (born 1988), Venezuelan beauty pageant winner and fashion model Massimo Bonanni (born 1982), Italian footballer Pearl Sinn-Bonanni (born 1967), Korean-American golfer Pietro Bonanni (1789–1821), Italian-American painter Raffaele Bonanni (born 1949), Italian trade unionist
See also Bonani (surname)