Faye Dunaway as Selena

Helen Slater as Kara Zor-El / Linda Lee / Supergirl

Peter O'Toole as Zaltar

Mia Farrow as Alura

Brenda Vaccaro as Bianca

Peter Cook as Nigel

Simon Ward as Zor-El

Marc McClure as Jimmy Olsen

Hart Bochner as Ethan

Maureen Teefy as Lucy Lane

David Healy as Mr. Danvers

Matt Frewer as Eddie, Truck Driver

Kelly Hunter as Argonian Citizen

Glory Annen as Midvale Protestor

Christian J. Fletcher as Argonian Citizen

Sandra Dickinson as Pretty Young Lady

Robyn Mandell as Myra

Jenifer Landor as Muffy

Diana Ricardo as Mrs. Murray

Nancy Lippold as Billy-Jo

Sonya Leite as Betsy

Lynsey Beauchamp as Ali

Michelle Taylor as Amy

Nancy Wood as Nancy

Virginia Greig as Jodie

Julia Lewis as Gloria

Bill Mitchell as Billy

Kevin Scott as Argonian Citizen

Baillie Walsh as Argonian Citizen

Orla Pederson as Party Guest

Bradley Lavelle as Lucy's Friend

Jill Goldston as Bystander at Protest (uncredited)

Erick Ray Evans as Party Guest