Paolo Villaggio as Dalmazio Siraghi

Lino Banfi as Amalio Siraghi

Massimo Boldi as Egisto Siraghi

Enrico Maria Salerno as Zio Aliprando Siraghi

Antonio Barrios as Franco Nero

Barbara Scoppa as Marisa Padovan

Antonio Allocca as Il paziente

Ennio Antonelli as Finto Prete

Claudio Boldi as La guardia

Corrado Monteforte as Minozzi

Dino Cassio as guardia

Larry Dolgin as Parson Robert Jr.

Francesco Salvi as carcerato (voce fuori campo)

Omero Capanna as uomo che cade dalla finestra

Clemente Ukmar as (uncredited)

Ettore Martini as (uncredited)

Luciano Foti as (uncredited)

Antonio Spinnato as (uncredited)

Marcello Magnelli as (uncredited)

Armando Tortorici as (uncredited)

Rossana Canghiari as (uncredited)