Sonnenkreuz practice black metal from an undisclosed Swedish location since 2025. Their German name meaning "sun cross" channels the ancient solar symbol into compositions of freshly-minted atmospheric darkness.

Sonnenrad combine black metal with harsh noise and power electronics from the Spanish underground, creating an abrasive fusion that pushes beyond conventional metal boundaries. Active since 2013, they bring confrontational extremity to the Iberian industrial/metal crossover.

Sonnentod ("Sun Death") have been practicing black metal from the Saarland town of Schiffweiler since 2003, making them one of the region's longest-running black metal acts. Their two-decade career has produced a body of work that explores the extinction of light.

Moscow's Sonno Profondo practice symphonic black metal from the Russian capital since 2021. Their Italian name meaning "deep sleep" channels the grandeur of unconscious depths into orchestrally rich compositions of atmospheric darkness.

SonosFear deliver melodic death metal and metalcore from Zaragoza, combining Scandinavian melodeath influences with modern breakdowns. Active since 2014, they bring sonic terror to the Aragonese metal scene.

Sonotra deliver thrash and death metal from the Mecklenburg-Vorpommern capital of Schwerin, channeling extreme aggression from the lake-studded northeastern German landscape. Active since 2012, they bring fierce energy to a region often overlooked in the German metal map.

Sons of Aeon craft melodic death metal from Jyvaskyla, channeling eternal themes through the Scandinavian melodeath tradition. Active since 2013, they bring age-spanning intensity to the central Finnish scene.

Sons of Balaur is a black metal act originating from the United Kingdom in 2015 as a fictional band from within the 'Realm of the Damned' graphic novel universe, before being brought to life as a performing group. Signed to Season of Mist, the band released their debut album Tenebris Deos in October 2016, presenting raw, orthodox black metal with a backstory constructed around the mythology of the graphic novel series. The project blurs the line between art concept and genuine band with deliberate intent, and the music itself — guitar-driven and tradition-minded — requires no narrative scaffolding to stand on its own terms.

Sons of Cain forge doom and sludge metal from Aalborg in northern Jutland, channeling biblical fratricidal themes through crushing compositions. Active since 2018, they bring the weight of the first murder to the North Jutland underground.