Jean Grey is a fictional character featured in seven films in the X-Men film series, starting with X-Men (2000) and ending with Dark Phoenix (2019), based on the Marvel Comics character of the same name, created by Stan Lee and Jack Kirby. Jean was portrayed by Dutch actress Famke Janssen in five films, with "Jean" in The Wolverine (2013) being a posthumous hallucination in Logan's head and her appearance in X-Men: Days of Future Past (2014) being a brief flashforward scene. For the 2016 film X-Men: Apocalypse, Jean was recast with English actress Sophie Turner, who would reprise her role in Dark Phoenix in 2019.

X-Men is a 2000 American superhero film directed by Bryan Singer from a screenplay by David Hayter and a story by Singer and Tom DeSanto, based on the Marvel Comics superhero team of the same name created by Stan Lee and Jack Kirby. Featuring an ensemble cast consisting of Patrick Stewart, Hugh Jackman, Ian McKellen, Halle Berry, Famke Janssen, James Marsden, Bruce Davison, Rebecca Romijn-Stamos, Ray Park, and Anna Paquin, the film depicts a world where an unknown proportion of people are mutants, possessing superhuman powers that make them distrusted by normal humans. It focuses on mutants Wolverine and Rogue as they are brought into a conflict between two groups with radically different approaches to bringing about the acceptance of mutant-kind: Charles Xavier's X-Men, and the Brotherhood of Mutants, led by Magneto.