Alberto Sordi as Onofrio Del Grillo

Paolo Stoppa as Papa Pio VII

Caroline Berg as Olimpia

Riccardo Billi as Aronne Piperno

Flavio Bucci as Don Bastiano

Camillo Milli as Segretario del Papa

Cochi Ponzoni as Conte Rambaldo

Marc Porel as Capitano Blanchard

Pietro Tordi as Monsignor Terenzio Del Grillo

Leopoldo Trieste as Padre Sabino

Giorgio Gobbi as Ricciotto

Isabelle Linnartz as Genuflessa

Tommaso Bianco as Amministratore

Marina Confalone as Camilla

Elena Fiore as Anita

Elena Daskowa Valenzano as Marchesa del Grillo

Andrea Bevilacqua as Polpeo

Angela Campanella as Faustina

Isabella De Bernardi as Figlia di Gasperino

Gianni Di Pinto as Maruccio

Ettore Geri as High priest who presides over the execution

Ivan De Paola as

Nicola Di Marzio as

Jacques Herlin as Rabet

Salvatore Iacono as Bargello

Elisa Mainardi as Moglie di Gasperino

Renzo Rinaldi as

Salvatore Biondo as Monk (uncredited)

Sal Borgese as giocatore di carte

Mimmo Poli as Oste

Arnaldo Caivano as Cardinal (uncredited)

Fernando Arcangeli as Prince Marcello di Valmontone (uncredited)

Vezio Natili as Cardinal (uncredited)

Salvatore Francofonte as Lawyer (uncredited)