Spiritus Mundi is a heavy and thrash metal band from Sylvania, Ohio, formed in 2011, taking its name from W.B. Yeats and channeling classic metal aggression with a riff-centric approach rooted in the traditions of both genres.

Spiritus Vindictus is a raw black metal project from Wilmington, North Carolina, formed in 2023, embracing the genre's most primitive and lo-fi production values to deliver venomous, unadorned black metal.

Las Vegas' SpiritWorld, the creation of vocalist Stu Folsom, blast a volatile fusion of hardcore, thrash metal, and Western-gothic storytelling they call 'death-western,' painting vivid narratives of frontier violence and supernatural dread over crushing, riff-driven aggression. Their debut 'Pagan Rhythms' and follow-up 'Deathwestern' on Century Media Records deliver a cinematic intensity that sets them apart from both the hardcore and metal worlds. SpiritWorld's unique thematic identity and Folsom's ferocious vocal delivery make them one of the most inventive and exciting bands in modern heavy music.

Spirotin is a Los Angeles band formed in 2021 that merges black metal and metalcore, combining the atmospheric malice and tremolo aggression of black metal with the rhythmic heaviness and breakdowns of metalcore.

Spirus is a Philadelphia black/thrash metal band formed in 1996, one of the city's longer-running underground metal acts, fusing the speed and riff density of thrash with the cold aggression of black metal.

Bay Area brutalists Spite deal in relentlessly aggressive deathcore built on guttural vocals, punishing breakdowns, and a suffocating atmosphere of nihilistic rage. Vocalist Darius Tehrani's intense delivery and the band's uncompromising sonic violence on albums like 'Nothing Is Beautiful' and 'Dedication to Flesh' have made them a leading force in modern deathcore's heaviest wing. Spite's live shows are notorious for their intensity, regularly turning venues into war zones of swirling pits and crowd surges.

Spiteful Visions is a Minneapolis death metal and deathcore band formed in 2022, incorporating melodic and technical death metal elements alongside deathcore breakdowns for a multifaceted approach to extreme metal.

Spiter is a Philadelphia black metal and punk band formed in 2021, blending the raw antagonism of black metal with the stripped-down aggression of punk in a style reminiscent of black n' roll and black punk hybrids.

Spitkiss is an industrial and groove metal band from San Jose, California, formed in 1994, combining the mechanical textures and electronic elements of industrial metal with the mid-tempo, riff-locked heaviness of groove metal.