War of the Worlds is a 2005 American science fiction action-thriller film directed by Steven Spielberg and written by Josh Friedman and David Koepp, based on H. G. Wells' 1898 novel, The War of the Worlds. Tom Cruise stars in the main role alongside Dakota Fanning, Miranda Otto, and Tim Robbins, with narration by Morgan Freeman. It follows an American dock worker who must look after his children, from whom he lives separately, as he struggles to protect them and reunite them with their mother when extraterrestrials invade Earth and devastate cities with giant war machines.

Produced by Paramount Pictures, DreamWorks Pictures, Amblin Entertainment, and Cruise/Wagner Productions, the film was shot in 73 days, using five different sound stages as well as locations in California, Connecticut, New Jersey, New York, and Virginia. It was surrounded by a secrecy campaign so few details would be leaked before its release. Tie-in promotions were made with several companies, including Hitachi.

War of the Worlds was released theatrically by Paramount Pictures on June 29, 2005, and received generally positive reviews. It was praised for effectively capturing the thrilling and suspenseful elements of Wells' novel while modernizing the action and effects to resonate with contemporary audiences. The film was also a commercial success, grossing over $603 million worldwide, making it the fourth most successful film of 2005. It earned Academy Awards nominations for Best Visual Effects, Best Sound Mixing and Best Sound Editing.