Lorenzaccio is a 1951 Italian historical drama film directed by Raffaello Pacini and starring Giorgio Albertazzi, Folco Lulli and Anna Maria Ferrero. It is an adaptation of the 1834 play Lorenzaccio by Alfred de Musset about the life of Lorenzino de' Medici.
The film's soundtrack was composed by Carlo Rustichelli.
Comparing the film with the 1935 version of the adaptation of the play (, Panorama wrote: "It would be necessary to be able to see the two films side by side also because in the initial phase of his career Albertazzi willingly presented himself as the heir and continuator of Moissi".