Marangoni is an Italian surname. Notable people with the surname include:
Alan Marangoni (born 1984), Italian cyclist Alessandro Marangoni (born 1979), Italian classical pianist Carla Marangoni (1915–2018), Italian gymnast Carlo Marangoni (1840–1925), Italian physicist Marangoni effect Marangoni number Claudio Marangoni (born 1954), Argentine footballer
Rodrigo Marangoni (born 1978), Argentine footballer