Dedee Pfeiffer (* 1. Januar 1964 in Midway City, Kalifornien als Dorothy D. Pfeiffer) ist eine US-amerikanische Schauspielerin und die Schwester von Michelle Pfeiffer. ()
Dorothy Diane "Dedee" Pfeiffer (born January 1, 1964) is an American actress, the younger sister of Michelle Pfeiffer. She began her career appearing in films include Vamp (1986), The Allnighter (1987) and The Horror Show (1989). Pfeiffer later starred as Cybill's daughter, Rachel, in the CBS sitcom Cybill (1995-1997)