Fosco Giachetti (28 March 1900, in Sesto Fiorentino – 22 December 1974, in Rome) was an Italian actor.

Fosco Giachetti was the protagonist of Lo squadrone bianco (1936), directed by Augusto Genina. He became the leading man in Fascist propaganda films such as Tredici uomini e un cannone (1936), Sentinelle di bronzo (1937), Scipione l'Africano, Edgar Neville's Italian Carmen fra i rossi (1939), L'assedio dell'Alcazar (1940) and Bengasi (1942). In 1942, he also co-starred in Goffredo Alessandrini's two part Noi Vivi and Addio Kira!.