Sharknado is a 2013 American made-for-television science fiction comedy disaster film directed by Anthony C. Ferrante. It tells about a waterspout that lifts sharks out of the ocean and deposits them in Los Angeles. It is the first installment in the Sharknado film series. The movie first aired on the Syfy channel on July 11, 2013, and stars Tara Reid, Ian Ziering, and John Heard. It was also given a one-night-only special midnight theatrical screening via Regal Cinemas and Fathom Events, where it earned $200,000 from 200 screenings. The over-the-top premise and theatrics of the film quickly earned it a cult following.

The film spawned a franchise of the same name; five sequels have been produced (Sharknado 2: The Second One, Sharknado 3: Oh Hell No!, Sharknado: The 4th Awakens, Sharknado 5: Global Swarming, and The Last Sharknado: It's About Time), as well as three spin-off films (Lavalantula, Sharknado: Heart of Sharkness, and 2 Lava 2 Lantula).

Though the original film was not explicitly a comedy, maintaining at least a façade of seriousness despite the implausible plot, the sequels were more openly comedic in nature.