 Jean-Paul BelmondoArthur Lespinasse | Arthur Lespinasse |
 BourvilAnatole | Anatole |
 David NivenColonnel Carol Matthews, Aka 'Le Cerveau' | Colonnel Carol Matthews, Aka 'Le Cerveau' |
 Eli WallachFrankie Scannapieco, Godfather of the Italian Mafia | Frankie Scannapieco, Godfather of the Italian Mafia |
 Silvia MontiSofia Scannapieco, Frankie's Sister | Sofia Scannapieco, Frankie's Sister |
 Raymond GérômeCommissioner | Commissioner |
 Fernand GuiotInspector Mazurel, Assistant to the Commissioner | Inspector Mazurel, Assistant to the Commissioner |
 Jacques BalutinInspector Pochet | Inspector Pochet |
 Jacques CironInspector Dubœuf | Inspector Dubœuf |
 Patrick PréjeanBelgian Sergeant of the Armoured Car | Belgian Sergeant of the Armoured Car |
 Robert DalbanBelgian Soldier of the Armored Car (With a Cold) | Belgian Soldier of the Armored Car (With a Cold) |
 Raoul DelfosseBelgian Soldier of the Armored Car | Belgian Soldier of the Armored Car |
 Roland MonkBelgian Soldier of the Armored Car | Belgian Soldier of the Armored Car |
 Mario DavidJean-François, Antique Dealer in Le Havre | Jean-François, Antique Dealer in Le Havre |
 Henri GénèsChief Warden of Poissy Prison | Chief Warden of Poissy Prison |
 Yves BarsacqWarden of Poissy Prison | Warden of Poissy Prison |
 Dominique ZardiWarden of Poissy Prison | Warden of Poissy Prison |
 Max MontavonAntique Dealer in Le Havre, Jean-François’ Partner | Antique Dealer in Le Havre, Jean-François’ Partner |
 Paul MerceyAndré, the Flooded Owner of the 5th Floor | André, the Flooded Owner of the 5th Floor |
 Henri AttalMember of the Colonel's Gang | Member of the Colonel's Gang |
 Tommy DugganSuperintendent Cummings | Superintendent Cummings |
 Sophie GrimaldiBlonde on the Train | Blonde on the Train |
 Roger LumontBoss of the Shop | Boss of the Shop |
 John RicoMember of the Italian Mafia | Member of the Italian Mafia |
| AArch TaylorMember of the Italian Mafia | Member of the Italian Mafia |
| TTrevor A. StephensNot listed | Not listed |
 Pierre TornadeBelgian Soldier in Armored Car (uncredited) | Belgian Soldier in Armored Car (uncredited) |
 Micha BayardAndré's Wife (uncredited) | André's Wife (uncredited) |
 Gérard HernandezPoliceman in Le Havre (uncredited) | Policeman in Le Havre (uncredited) |
 César Torres(uncredited) | (uncredited) |
