Franzoni is an Italian surname. Notable people with the surname include:
David Franzoni (born 1947), American screenwriter Enrico Franzoni (1920–2008), Swiss lawyer and politician Francesco Antonio Franzoni (1734–1818), Italian sculptor Giovanni Battista Franzoni (1928–2017), Italian dissident Catholic theologian Giovanni Franzoni (alpine skier) (born 2001), Italian World Cup alpine ski racer