Battlestar Galactica: Razor is a TV movie, and first aired on Sci Fi Channel on November 24, 2007. A spin-off of the hit television series Battlestar Galactica, the movie chronicles the survival of the Battlestar Pegasus commanded by Admiral Cain, a character introduced in season two of the series. The DVD was released in December 2007, shortly after it premiered on television.

Battlestar Galactica: Razor primarily deals with the story behind Battlestar Pegasus' miraculous survival of the Cylon ambush which destroyed the majority of human civilization. The details of the ship's story was hinted at but never fully revealed when the ship and its crew joined Commander Adama's fleet late in season two of the series. The movie cuts back and forth between Admiral Cain's leadership shortly after the Cylon attack and Lee Adama's first mission while in command of the Battlestar Pegasus after Cain's death.