Blood Omen: Legacy of Kain is an action-adventure game developed by Silicon Knights and published by Crystal Dynamics, with distribution involvement from Activision and BMG Interactive. It was released for the PlayStation in 1996. A Microsoft Windows port was developed by Semi Logic Entertainments and released jointly by Crystal Dynamics and Activision in 1997, which was rereleased digitally via GOG.com in 2021. The game is the first title in the Legacy of Kain series.

Legacy of Kain is a series of dark fantasy action-adventure video games primarily developed by Crystal Dynamics and formerly published by Eidos Interactive. The first title, Blood Omen: Legacy of Kain, was created by Silicon Knights in association with Crystal Dynamics, but, after a legal battle, Crystal Dynamics retained the rights to the game's intellectual property, and continued its story with four sequels. To date, five games comprise the series, all initially developed for video game consoles and later ported to Microsoft Windows. Focusing on the eponymous character of Kain, a vampire antihero, each title features action, exploration and puzzle-solving, with some role-playing game elements.