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)

Pierre Tornade as Abraracourcix / Assurancetourix (voice)

Roger Lumont as Cylindric le Germain (voice)

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

Bernard Lavalette as Préfet / Hermès (voice)

Monique Thubert as Vénus (voice)

Jean Stout as Perroquet chantant (voice)

Alice Sapritch as Additional voices (uncredited)

Gisèle Grimm as Additional voices

Caroline Cler as Additional voices

Nicole Jonesco as Additional voices

Mary Mongourdin as Additional voices

Lawrence Riesner as Additional voices

Claude Dasset as Additional voices

Henri Poirier as Additional voices

Pascal Mazzotti as Additional voices

Ove Sprogøe as Astérix (stemme)