Dr. William Masters
Virginia Johnson
Libby Masters
Dr. Austin Langham
Betty DiMello
Barbara Sanderson
Lester Linden
Robert Franklin
Pauline Masters
Flo Packer
Dr. Lloyd Madden
Sam Duncan
Florence Duncan
Frank Masters
Elliot
Jim Pearson
Jeanne
Archie
Tony
Kent Underleigh (voice)
Ellen
Wired Male
Meg
Meg's Partner
Wired Female
Ellen's Partner
Woman in White
Fair Debutant (uncredited)
Waitress (uncredited)
Pedestrian (uncredited)