Ballistic: Ecks vs. Sever is a 2002 action thriller film directed by Wych Kaosayananda (under the pseudonym of Kaos). The film stars Antonio Banderas and Lucy Liu as opposing secret agents who team up to fight a common enemy. It is an international co-production among Canada, Germany and the United States.

Ballistic was universally panned by critics and has been frequently described as one of the worst films ever made. It was also a box-office bomb, grossing $20.2 million on a production budget of $70 million. With a total of 119 reviews, the most for a film with a 0% approval rating, Ballistic: Ecks vs. Sever is the worst-reviewed film in the history of Rotten Tomatoes.