Waterworld is a 1995 American post-apocalyptic action film directed by Kevin Reynolds and co-written by Peter Rader and David Twohy. It was based on Rader’s original 1986 screenplay and stars Kevin Costner, who also produced it with Charles Gordon and John Davis. It was distributed by Universal Pictures.

The setting of the film is in the distant future. Although no exact date was given in the film itself, it has been suggested that it takes place in 2500. The polar ice cap has completely melted, and the sea level has risen over 7,600 m (25,000 feet), covering nearly all of the land. The plot of the film centers on an otherwise nameless antihero, “The Mariner”, a drifter who sails the Earth in his trimaran.

The most expensive film ever made at the time, Waterworld was released to mixed reviews, praising the futuristic setting and premise but criticizing the characterization and acting performances. The film also was unable to recoup its massive budget at the box office; however, the film did later become profitable due to video and other post-cinema sales. The film was also nominated for an Academy Award in the category Best Sound at the 68th Academy Awards.

The film’s release was accompanied by a novelization, video game, and three themed attractions at Universal Studios Hollywood, Universal Studios Singapore, and Universal Studios Japan called Waterworld: A Live Sea War Spectacular, all of which are still running as of 2019.