Bloodbath este un proiect format in 1998 de unii dintre cei mai important artisti ai scenei metal din Suedia. In prezent lineup-ul este alcatuit din Anders "Blakkheim" Nyström – lead guitars, backing vocals - Katatonia, Jonas Renkse – bass guitar (1998–present)- Katatonia, Martin "Axe" Axenrot – drums - Opeth, percussion (2004–present), Per "Sodomizer" Eriksson – guitars (2007–present) Katatonia, Nick Holmes – vocals (2014–present) Paradise Lost.
In trecut au mai facut parte din formatie Mikael Akerfeldt – lead vocals - (1998–2005, 2007–2012) - Opeth, Peter Tagtgren – lead vocals (2004–2005)- Hypocrisy/PAIN si Dan Swano – drums, percussion (1998– 2004), guitars (2004–2006) - Nightingale.
