 Jane FondaBarbarella | Barbarella |
 John Phillip LawPygar | Pygar |
 Anita PallenbergThe Great Tyrant | The Great Tyrant |
 Marcel MarceauProfessor Ping | Professor Ping |
 Claude DauphinPresident of Earth | President of Earth |
 Milo O'SheaConcierge / Durand-Durand | Concierge / Durand-Durand |
 Véronique VendellCaptain Moon | Captain Moon |
 Serge MarquandCaptain Sun | Captain Sun |
 Catherine ChevallierStomoxys | Stomoxys |
| MMarie Therese ChevallierGlossina | Glossina |
 David HemmingsDildano | Dildano |
 Ugo TognazziMark Hand | Mark Hand |
 Giancarlo CobelliJean-Paul | Jean-Paul |
 Fabienne FabreLa femme arbre | La femme arbre |
 Nino MuscoThe General | The General |
 Umberto Di GraziaSogo Citizen | Sogo Citizen |
 Franco GulàThe Suicide | The Suicide |
 Robert RiettiProfessor Ping (voice) | Professor Ping (voice) |
 Kitty SwanGirl in Sogo (uncredited) | Girl in Sogo (uncredited) |
 Fabio TestiTall Man at Party (uncredited) | Tall Man at Party (uncredited) |
 Talitha PolPipe-Smoking Girl (uncredited) | Pipe-Smoking Girl (uncredited) |
 Antonio SabàtoJean-Paul (uncredited) | Jean-Paul (uncredited) |
| HHoney AutumnBald Handmaiden at Sogovian Court (uncredited) | Bald Handmaiden at Sogovian Court (uncredited) |
 Diane Bond(uncredited) | (uncredited) |
 Silvana Venturelli(uncredited) | (uncredited) |
 Carla Cassola(uncredited) | (uncredited) |
 Joan GreenwoodThe Great Tyrant (voice) (uncredited) | The Great Tyrant (voice) (uncredited) |
 María Teresa OrsiniSuicide Girl (uncredited) | Suicide Girl (uncredited) |
| CChantal CachinRevolutionary (uncredited) | Revolutionary (uncredited) |
 Fred RobsahmDildano's Assistant (uncredited) | Dildano's Assistant (uncredited) |
