Serenity (Firefly vessel)

Serenity is a fictional spacecraft that appears in Joss Whedon's Firefly television series and related works. Set in the 26th century, the series follows the nine-person crew of the Firefly-class vessel, a small transport ship, as they earn a living through various legal and illegal means. The ship is the main setting; it appears in all fourteen episodes, the film, and several comics.

The ship was designed by director Joss Whedon, production designer Carey Meyer, and visual effects supervisor Loni Peristere. Two contiguous sets were built, between them containing the entirety of the ship's interior. The digital model of the ship was created by Zoic Studios, who also developed methods to digitally replicate live-action filming techniques, a first for television. These allowed digital renderings of the ship to blend in with the documentary/found-footage filming style of the live-action scenes.

Serenity is described by Whedon as the "tenth character" of the series. Some reviews compare the ship to the Millennium Falcon in the Star Wars franchise.