Dr. Ian Malcolm is a fictional character from the Jurassic Park franchise created by Michael Crichton and portrayed by Jeff Goldblum. Malcolm is a gifted mathematician who specializes in chaos theory. The character was inspired in part by American historian of science James Gleick and French mathematician Ivar Ekeland. In Crichton's 1990 novel Jurassic Park and its 1993 film adaptation, Malcolm is invited by insurance lawyer Donald Gennaro to notice any problems with John Hammond's dinosaur theme park, Jurassic Park. Malcolm was intended by Crichton to fill in the role of the audience in the scenarios he is put through. Malcolm is a secondary protagonist in the original novel and the main protagonist in the sequel, The Lost World, due to positive fan reception from Goldblum's performance as the character in director Steven Spielberg's film adaptation of the original novel.

Jurassic Park, later also referred to as Jurassic World, is an American science fiction media franchise created by Michael Crichton and centered on a disastrous attempt to create a theme park of cloned dinosaurs. It began in 1990 when Universal Pictures and Amblin Entertainment bought the rights to Crichton's novel Jurassic Park before it was published. The book was successful, as was Steven Spielberg's 1993 film adaptation. The film received a theatrical 3D re-release in 2013, and was selected in 2018 for preservation in the United States National Film Registry by the Library of Congress as being "culturally, historically, or aesthetically significant". A 1995 sequel novel, The Lost World, was followed by a film adaptation in 1997. Subsequent films in the series from Jurassic Park III (2001) onward are not based on novels by Crichton.