Roger Carel

as Astérix / Caius Pupus / Idefix / Sénateur (voice)

Jacques Morel

as Obélix / Employé sur la balançoire (voice)

Jean Martinelli

as Jules César / Jupiter (voice)

Henri Virlogeux

as Panoramix / Iris / Décurion (voice)

Micheline Dax

as Grande prêtresse de l'Île du plaisir / Cléopâtre (voice)

Pierre Tornade

as Abraracourcix / Assurancetourix (voice)

Roger Lumont

as Cylindric le Germain (voice)

Stéphane Steeman

as Mannekenpix (voice)

Gérard Hernandez

as Vénérable du sommet (voice)

Henri Labussière

as Huissier de la maison qui rend fou (voice)

Pierre Tchernia

as Narrator (voice) (uncredited)

Georges Atlas

as Fantôme de la plaine des trépassés / Cétautomatix (voice)

Nicole Vervil

as Bonemine (voice)

Jacques Hilling

as Dresseur du cirque (voice)

Odette Laure

as Employée du Guichet II de la maison qui rend fou (voice)

Claude Bertrand

as Sénateur / Centurion (voice)

Brigitte Bardot

as Vénus

Bernard Lavalette

as Préfet / Hermès (voice)

Jean Stout

as Perroquet chantant (voice)

Alice Sapritch

as Additional voices (uncredited)

Gisèle Grimm

as Additional voices

Nicole Jonesco

as Additional voices

Mary Mongourdin

as Additional voices

Caroline Cler

as Additional voices

Lawrence Riesner

as Additional voices

Claude Dasset

as Additional voices

Henri Poirier

as Additional voices

Pascal Mazzotti

as Additional voices