Carnivàle () is an American television series set in the United States Dust Bowl during the Great Depression of the 1930s. The series, created by Daniel Knauf, ran for two seasons between 2003 and 2005. In tracing the lives of disparate groups of people in a traveling carnival, Knauf's story combined a bleak atmosphere with elements of the surreal in portraying struggles between good and evil and between free will and destiny. The show's mythology draws upon themes and motifs from traditional Christianity and gnosticism together with Masonic lore, particularly that of the Knights Templar order.

Carnivàle was produced by HBO and aired between September 14, 2003, and March 27, 2005. Its creator, Daniel Knauf, also served as executive producer along with Ronald D. Moore and Howard Klein. Jeff Beal composed the original incidental music. Nick Stahl and Clancy Brown starred as Ben Hawkins and Brother Justin Crowe, respectively. The show was filmed in Santa Clarita, California, and nearby Southern California locations.

Early reviews praised Carnivàle for style and originality but questioned the approach and execution of the story. The first episode set an audience record for an HBO original series and drew durable ratings through the first season. When the series proved unable to sustain these ratings in its second season, it was cancelled. An intended six-season run was thus cut short by four seasons.

In all, 24 episodes of Carnivàle were broadcast. In 2004, the series won five Emmys out of fifteen nominations. The show received numerous other nominations and awards between 2004 and 2006.