Mercury Rising is a 1998 American action thriller film directed by Harold Becker and written by Lawrence Konner and Mark Rosenthal. It is based on the 1996 novel Simple Simon by Ryne Douglas Pearson. The film stars Bruce Willis as Art Jeffries, an FBI agent who protects Simon Lynch (Miko Hughes), a nine-year-old autistic boy targeted by government assassins after he deciphers a classified National Security Agency code. Alec Baldwin, Chi McBride, and Kim Dickens appear in supporting roles.

The film was released in the United States on April 3, 1998, by Universal Pictures. It received mostly negative reviews from critics, who criticized its formulaic plot and tonal inconsistencies, though several reviewers praised its emotional sincerity and the sensitive portrayal of autism. The film grossed approximately $93 million worldwide against a production budget estimated between $50–60 million.

At the 19th Golden Raspberry Awards, Willis received the award for Worst Actor. Moreover, Hughes won Best Leading Young Actor in a Feature Film at the 20th Youth in Film Awards.