Stormbreaker (also known as Alex Rider: Operation Stormbreaker and Alex Rider: Stormbreaker) is a 2006 action spy film directed by Geoffrey Sax. The screenplay by Anthony Horowitz is based on his 2000 novel Stormbreaker, the first novel in the Alex Rider series. The film stars Alex Pettyfer as Alex Rider, and also stars Mickey Rourke, Bill Nighy, Sophie Okonedo, Alicia Silverstone, Sarah Bolger, Stephen Fry and Ewan McGregor. Stormbreaker was an international co-production between companies and financiers from the United Kingdom, the United States, and Germany.

The film's plot follows a teenage boy who is recruited by MI6 after his uncle, a secret agent, is killed in action. He is sent on a mission in Cornwall to gather intelligence behind Stormbreaker, an advanced computer system being provided to schools across Britain, and its creator, billionaire Darrius Sayle.

Intended to be the first entry in a film franchise, Stormbreaker grossed between $20.7 and $23.9 million worldwide upon its theatrical release, failing to recoup its $40 million budget and making the film a box office bomb. According to Rotten Tomatoes, the film was largely criticized for its lack of originality and believability. As a result of these factors, plans to produce further Alex Rider films were dropped. A rebooted TV series, Alex Rider, premiered on Amazon Prime Video in 2020.