Berserk or berzerk can refer to:
Bezerk is the second studio album by Welsh glam metal band Tigertailz. It was released on the Music for Nations record label and is still the band's most successful and well known album, having reached the UK top 40. The band tuned down its heaviness and make this album with more pop influences.
In 2006 Tigertailz released a new album called Bezerk 2.0 which featured similar album art to the original release.
On the 2009/2010 tour, Tigertailz made the choice to perform the whole album on each show.
Bezerk 2.0 is a 2006 album by Welsh glam metal band Tigertailz, released on Demolition Records. It is seen as a follow up to the original album Bezerk released on Music For Nations in 1990. It goes back to the more pop metal sound the band had at the time rather than the heavier sound they used on albums such as Banzai! and Wazbones. The album features similar artwork to the original Bezerk album.