A berserker was a Norse warrior who fought in a trance-like fury.

Berserker or Berzerker may also refer to:

• Berserker (1987 film), a slasher horror film
• Berserker (2004 film), a film based on the Norse concept of the berserker

• Berserker (novel series), a space opera series by Fred Saberhagen
• Berserker (comics), a series of American comic books
• Berzerker, a Marvel Comics character
• Berserker, a character of Fate/stay night
• Berserker, a named character and series of characters from Soulcalibur
• Berserker Armor, a fictional body armor worn by Guts in the manga series Berserk

• Berserker (Amon Amarth album), 2019
• Berserker (Beast in Black album), 2017
• Berserker (Gary Numan album), 1984
• Berserker (Jane album), 2005
• Berserker (EP), by Scratch Acid, 1986
• "Berserker", a song by Love Among Freaks from the 1994 soundtrack Clerks: Music from the Motion Picture
• The Berzerker, an Australian industrial death metal band
  • The Berzerker (album), 2000
• "Berserkers", a song by Black Label Society from the 2002 album 1919 Eternal

• Berserker, Queensland, a suburb of Rockhampton, Queensland, Australia
• Berserker Range, a mountainous region in Queensland, Australia
• Berserker, a hypothetical and fictional self-replicating spacecraft
• John Nord (born 1959), professional wrestler known as The Berzerker

• Berserk (disambiguation)
• Zerker (disambiguation)
• Lewis chessmen, four of which are shown as wild-eyed berserkers