 Jean-Paul BelmondoRocco | Rocco |
 Lino VenturaHervé Marec, aka 'Le plouc' | Hervé Marec, aka 'Le plouc' |
 Bernard BlierMitch-Mitch | Mitch-Mitch |
 Andréa ParisyPepa | Pepa |
 Gert FröbeCastigliano, aka 'La betterave' | Castigliano, aka 'La betterave' |
 Reginald KernanJohn Steiner aka Peter Frocht | John Steiner aka Peter Frocht |
 Pierre MiratHalibi, aka 'Le sourdingue' | Halibi, aka 'Le sourdingue' |
| DDoudou BabetKhenouche, waiter at Halibi | Khenouche, waiter at Halibi |
 Jackie BlanchotGuest at Halibi | Guest at Halibi |
 Anne-Marie CoffinetAngèle Bameste | Angèle Bameste |
 Pierre ColletWorker at Castigliano | Worker at Castigliano |
 Louis BugetteOrlando, bar owner | Orlando, bar owner |
 Christian BrocardPlouc's Mechanic | Plouc's Mechanic |
 Paul BonifasDoctor Magnart, former professor in Lyon | Doctor Magnart, former professor in Lyon |
 Henri LambertRobert, client at Orlando (uncredited) | Robert, client at Orlando (uncredited) |
 Marcel BernierMarcel, mechanic at Castigliano (uncredited) | Marcel, mechanic at Castigliano (uncredited) |
 Georges AminelCastigliano, aka 'La betterave' (voice) (uncredited) | Castigliano, aka 'La betterave' (voice) (uncredited) |
