Raining Blood is the final track from thrash metal band Slayer's 1986 album, Reign in Blood.
The song is regarded as a masterpiece by metal fans. The title itself plays on being a near homophone with the album title. Slayer's guitarists Jeff Hanneman and Kerry King wrote the lyrics with Hanneman writing the music. No live Slayer CD or DVD has been released without it and it remains a popular concert staple. It was also issued as a single by Def Jam Recordings.
On the original 1986 pressing, Raining Blood (track 10) starts at the breakdown of the previous track (Postmortem). This error was corrected on the 1998 re-release.