The Day After Tomorrow is a 2004 American science fiction disaster film conceived, co-written, co-produced, and directed by Roland Emmerich, based on the 1999 book The Coming Global Superstorm by Art Bell and Whitley Strieber, and starring Dennis Quaid, Jake Gyllenhaal, Sela Ward, Emmy Rossum, and Ian Holm. The film depicts catastrophic climatic effects following the disruption of the North Atlantic Ocean circulation, in which a series of extreme weather events usher in climate change and lead to a new ice age.

Originally slated for release in the summer of 2003, it debuted in Mexico City on May 17, 2004, and was released in the US on May 28, 2004. The film was a commercial success, grossing $552 million worldwide against a production budget of $125 million, becoming the sixth-highest-grossing film of 2004. Filmed in Montreal, it was the highest-grossing Hollywood film made in Canada at its time of release. The film received mixed reviews. It was nominated for Best Science Fiction Film and Best Special Effects at the Saturn Awards.