Giannetto De Rossi (8 August 1942 – 11 April 2021) was Italian makeup and special effects artist for motion pictures. His career included work for several high-profile directors, including Bernardo Bertolucci, Sergio Leone, Federico Fellini, Franco Zeffirelli, and David Lynch; as well as collaborations with cult horror filmmakers Lucio Fulci and Alexandre Aja.

He was known particularly for his highly-detailed and realistic prosthetic appliances, most visible in his horror output. He was nominated for the BAFTA Award for Best Special Effects for the Oscar-winning The Last Emperor (1987). One of his first special FX roles was as make-up artist for Joe D'Amato, whose film Emanuelle in America required detailed special FX for the notorious snuff film sequences.