Silvershades blend gothic and doom metal from Neuss in the Rhineland, weaving dark romanticism through crushing, atmospheric compositions. Active since 2013, they bring elegance and heaviness to the North Rhine-Westphalia metal scene.

Simon del Desierto channel doom metal from Madrid, named after Luis Bunuel's surrealist film about a desert-dwelling ascetic. Active since 2016, they bring surrealist heaviness to the Spanish capital's doom scene.

Irkutsk's Sincerity of Lost pair death and doom metal from the Baikal city since 2020. Their name of honest grief and origins near the world's deepest lake channel authentic sorrow into compositions of Siberian heaviness.

Sine Anima ("Without Soul" in Latin) forge gothic, doom, and death metal from Murcia, blending dark romanticism with crushing extremity. Active since 2014, they bring soulless darkness to the southeastern Spanish scene.

Sinistro formed in Lisbon, Portugal in 2011, initially releasing an instrumental debut before integrating the distinctive voice of vocalist Patrícia Andrade, which became the defining element of the band's atmospheric doom and post-metal sound. After signing to Season of Mist, the band released Semente (2016) and Sangue Cássia (2018), earning praise from peers including Paradise Lost and Cult of Luna and appearances at Roadburn Festival. Their fourth full-length Vértice arrived in 2024 via Alma Mater Records. Sinistro are widely considered one of Portugal's most important metal exports, with Andrade's vocal presence lifting their work beyond genre convention.

Reykjavik's Sjálfsmorð af Gáleysi merge black, death, and doom metal with an Icelandic name meaning "suicide by negligence" since 2018. Their harrowing thematic scope is matched by music of profound heaviness and desolation.

Saint Petersburg's Sjøtrollet pair black and doom metal from the cultural capital since 2022. Their Norwegian name meaning "sea troll" channels Scandinavian maritime mythology into compositions from Russia's most European city.

Skepticism are legendary funeral doom pioneers from Riihimaki, widely regarded as one of the genre's founding acts alongside Thergothon and Funeral. Their glacially paced, organ-drenched compositions have defined funeral doom's sonic vocabulary and influenced countless bands worldwide.

Skitliv is a Norwegian black-doom metal band founded in Oslo in 2005 by former Mayhem vocalist Maniac (Sven Erik Kristiansen) and Shining vocalist Niklas Kvarforth. The project's name translates from Norwegian and Swedish as 'shit life,' and the band's conceptual focus on nihilism and human degradation reflects Maniac's desire to process his post-Mayhem years and confront personal demons in a darker and more brooding context than his previous work. Signed to Season of Mist, Skitliv remain active as an outlet for Maniac's most extreme artistic impulses.