X2: X-Men United
- Release Date: May 2, 2003
- Genre: Action, Adventure, Fantasy, Sci-Fi
- Director: Bryan Singer
- Producer(s): Lauren Shuler Donner, Ralph Winter
- Writer(s): Dan Harris, Mike Dougherty
- Studio: 20th Century Fox
- Length: 2h 14m | Classification: G
- Official Site: www.x2-movie.com
