WarGames is a 1983 American Cold War suspense/science-fiction film written by Lawrence Lasker and Walter F. Parkes and directed by John Badham. The film stars Matthew Broderick and Ally Sheedy.

The film follows David Lightman (Broderick), a young hacker who unwittingly accesses WOPR, a United States military supercomputer programmed to predict possible outcomes of nuclear war. Lightman gets WOPR to run a nuclear war simulation, originally believing it to be a computer game. The simulation causes a national nuclear missile scare and nearly starts World War III.

The film was a box office success, costing US$12 million, but grossing $79,567,667 after five months in the United States and Canada. The film was nominated for three Academy Awards. A sequel, WarGames: The Dead Code, was released direct to DVD on July 29, 2008.