Inferno festival returns to Oslo, Norway from April 2-5, 2026, featuring an extensive lineup of 69 metal acts across four days. Legendary black metal pioneers Mayhem headline alongside Deicide, Enslaved, and Primordial, showcasing the festival's focus on Norwegian black metal, melodic black metal, and industrial metal. The lineup spans international metal acts from Norway, Germany, Ireland, Sweden, and the United States, including notable bands like Cult of Luna, 1914, Incantation, and Samael. This comprehensive metal festival offers fans a rare opportunity to experience both established legends and emerging artists within the extreme metal scene.

Inferno is a four-day multi-venue festival.