Bionic Showdown: The Six Million Dollar Man and the Bionic Woman (often simply Bionic Showdown) is a made-for-television science fiction action film which originally aired on April 30, 1989 on NBC. The movie reunited the main casts of the television series The Six Million Dollar Man and its spin-off The Bionic Woman. It is notably the first television appearance of actress Sandra Bullock and the first film which strongly featured her. In the movie, a diplomatic crisis threatens world peace after an unknown bionic person steals top secret information.

Series regular characters Steve Austin (Lee Majors) and Jaime Sommers (Lindsay Wagner), Oscar Goldman (Richard Anderson), and Dr. Rudy Wells (Martin E. Brooks) are featured along with returning television movie character Jim Castillian (Lee Majors II, the real-life son of Lee Majors) and new characters Kate Mason (Sandra Bullock) and Jim Goldman (Jeff Yagher).

Following the success of the first reunion movie, The Return of the Six Million Dollar Man and the Bionic Woman (1987), Bionic Showdown was quickly greenlit and doubled as a "backdoor pilot" for a potential series based on the character of Kate Mason, but never materialized. Another television movie followed, Bionic Ever After? (1994).