Walter Matthau as Dr. Julian Winston

Ingrid Bergman as Stephanie Dickinson

Goldie Hawn as Toni Simmons

Jack Weston as Harvey Greenfield

Rick Lenz as Igor Sullivan

Vito Scotti as Señor Arturo Sánchez

Irene Hervey as Mrs. Durant

Eve Bruce as Georgia

Irwin Charone as Record Store Manager

Matthew Saks as Nephew

Linda Burton as Waitress (uncredited)

Hy Chase as 1st Waiter (uncredited)