Angel Rat is the sixth studio album released by the Canadian heavy metal band Voivod. Produced by Terry Brown of Rush fame, it was released in 1991 by Mechanic/MCA Records and is the follow-up to their critically acclaimed release, 1989's Nothingface. On this album, Voivod adopts a more alternative/progressive/psychedelic rock sound, as opposed to the progressive metal of Nothingface. A music video was made for the song "Clouds in My House".
While Angel Rat was released on a major record label, the album initially received mixed reviews and was not as successful as Nothingface, though it has gained a strong cult following in recent times. Before the release of the album, bassist Jean-Yves Thériault (Blacky) departed from the group, but rejoined in 2008 (later to leave again in 2014).