Silent Tower fuses black metal's bleakness with doom metal's crushing weight from the Provencal town of Martigues, formed in 2024. Their Mediterranean origins add an unusual geographic context to an otherwise Northern European-influenced sonic palette.

Silent Void crafts melodic doom/death metal from somewhere within France, their exact location kept deliberately obscure since their 2019 formation. Their compositions pair mournful clean melodies with guttural death metal vocals over glacially paced arrangements.

Silentvice deliver atmospheric doom/death metal from Madrid, building immersive, crushing compositions that channel the vise-like grip their name describes. Active since 2015, they bring suffocating heaviness to the Spanish capital.

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.