Spacecorpse is a technical death metal and deathcore band from Boulder, Colorado, formed in 2020. They combine the precision and complexity of technical death metal with the structural aggression of deathcore, representing the heavier end of Colorado's growing extreme metal scene.

Dallas, Texas outfit Sparrows began in 2011 with a foundation in melodic death metal and metalcore before evolving toward a heavier blackened death metal sound, reflecting the broader evolution of the Dallas extreme metal scene.

Spawning Vats is a death metal band from Mississippi, formed in 2015, playing in the old-school tradition of the genre with a focus on crushing riffs and a no-frills approach to brutality.

Spawnsire is a black/death metal band from Chicago, Illinois, formed in 2019, fusing the cold, dissonant textures of black metal with the heaviness and malevolence of death metal in the tradition of Chicago's prolific extreme metal underground.

Spazmic is a brutal death metal and goregrind band from El Paso, Texas, formed in 2008, operating at the extreme end of the underground with dense, abrasive recordings that blend the gore-splattered imagery and brutality of the genre's most uncompromising practitioners.

Speak of the Devil is a thrash and death metal band from Roanoke, Virginia, formed in 2012, merging the riff-forward aggression of thrash with death metal heaviness in the tradition of the East Coast underground.

Spear is a death metal band from Mesa, Arizona, active since 2016, delivering straightforward, punishing death metal rooted in the genre's foundational aesthetics. Their work favors crushing riffs and direct brutality over stylistic embellishment.

Spear Siege is a Texas blackened death metal act formed in 2025, combining the aggression of death metal with the cold, blasting ferocity of black metal. A newly emerged project, they represent the current wave of extreme metal coming out of the Lone Star State.

Species Splicer is a Lynnwood, Washington band formed in 2017 that operates in the overlapping territory of blackened brutal death metal and deathcore. Their sound grafts the chromatic density and guttural extremity of brutal death metal onto deathcore's breakdown-heavy architecture, with black metal atmosphere woven throughout.