Øystein Aarseth (22 March 1968 – 10 August 1993), who went by the pseudonym Euronymous, was a Norwegian guitarist and co-founder of the Norwegian black metal band Mayhem. He was also founder and owner of the extreme metal record label Deathlike Silence Productions and record shop Helvete.

Øystein Aarseth (22 March 1968 – 10 August 1993), who went by the pseudonym Euronymous, was a Norwegian guitarist and co-founder of the Norwegian black metal band Mayhem. He was also founder and owner of the extreme metal record label Deathlike Silence Productions and record shop Helvete.