Cabin Fever is a 2002 American horror film about a group of college graduates who rent a cabin in the woods and begin to fall victim to a flesh-eating virus. The film was the directing debut of filmmaker Eli Roth, who co-wrote the film with Randy Pearlstein. The inspiration for the film's story came from a real life experience during a trip to Iceland when Roth developed a skin infection. The film's title is a double entendre, referring both to the phenomenon, which is seen in the declining of the student's friendships, and also to the illness spreading through the cabin. Ironically, though, fever is never implied to be one of the disease's symptoms.

Roth wanted the style of his film to make a departure from many modern horror films that had been released in recent years. One modern horror film, The Blair Witch Project, did inspire Roth to use the internet to help promote the film during its production and help gain interest towards its distribution. The film itself, however, draws from many of Roth's favorite horror films, such as The Evil Dead, The Texas Chain Saw Massacre, and The Last House on the Left. Roth was tired of what he called the "watered down PG-13" horror films of the studios, and refused to compromise on the violence or nudity, saying they were essential ingredients to an '80s-style horror film.

In February 2010, a newly restored director's cut was released on Blu-ray.