Biagio Proietti (23 June 1940 – 12 March 2022) was an Italian screenwriter, director and writer.

Born in Rome, graduated in law,[1] Proietti started his career as an assistant director of Francesco Maselli in Time of Indifference.

[2] He made a name for himself as a screenwriter of a number of successful television gialli films and series, often directed by Daniele D'Anza and which he often wrote together with his wife Vittoria Prisco.

[1][2][3] He made his directorial debut with the TV-movie Storia senza parole, and in the 1980s directed two teen comedies.

[1][2][3] Proietti was also a novelist, a radio writer, a playwright and a documentarist.