Fantastic Four (sometimes stylized as Fantastic 4) is a 2005 American superhero film based on the Marvel Comics superhero team of the same name, created by Stan Lee and Jack Kirby. It was directed by Tim Story, and released by 20th Century Fox. The film stars Ioan Gruffudd, Jessica Alba, Chris Evans, Michael Chiklis, Julian McMahon, and Kerry Washington. The film follows the origins of the titular team as they learn to come to terms with their newfound abilities following their exposure to cosmic rays.

This was the second live-action Fantastic Four film to be filmed. A previous attempt, titled The Fantastic Four, was a B-movie produced by Roger Corman that ultimately went unreleased. Fantastic Four was released in the United States on July 8, 2005. Despite receiving generally negative reviews from critics, it grossed $333.5 million worldwide and was a box office success. A sequel, Fantastic Four: Rise of the Silver Surfer, was released in 2007. A reboot was released in 2015, while another is scheduled for release in 2025. Evans, who would portray Captain America in the Marvel Cinematic Universe (MCU), reprised his role as Johnny Storm / Human Torch in the MCU film Deadpool & Wolverine (2024).