Spinal Tap is the Los Angeles fictional heavy metal band created for Rob Reiner's 1984 mockumentary This Is Spinal Tap, whose satirical portrayal of rock excess became one of the most influential comedies in music history and a touchstone for heavy metal culture worldwide.

Spine Buster is a College Park, Maryland crossover thrash band formed in 2012, fusing thrash metal's technical aggression with the blunt energy of hardcore punk in the tradition of classic crossover acts.

Spinebelt is a groove metal band from Grantville, Pennsylvania, formed in 2020, delivering mid-paced, chug-heavy riffs in the vein of early 1990s groove metal with a straightforward and punishing approach.

Spinebreaker is a San Jose death metal and hardcore band formed in 2014, blending the savagery of death metal with hardcore's directness and aggression in the Bay Area's active heavy underground.

Los Angeles industrial metal outfit Spineshank were a key part of the late-1990s/early-2000s Roadrunner Records roster, blending Fear Factory's mechanized precision with nu-metal's groove and electronic textures. Albums like 'The Height of Callousness' and 'Self-Destructive Pattern' showcased a band more technically accomplished and sonically adventurous than many of their nu-metal peers, incorporating drum machines, samples, and atmospheric programming alongside crushing guitar riffs. After disbanding in 2004 and briefly reuniting, Spineshank left behind a catalog that rewards revisiting for fans of the industrial-metal crossover era.

Spira is a raw black metal project from Santa Rosa, California, formed in 2023, embracing the primitive, lo-fi aesthetic of second-wave black metal with a harsh and deliberately unpolished sonic approach.

Spiral Fracture is a Richmond, Virginia melodic death metal band formed in 2017, combining the melodic sensibilities of the Scandinavian tradition with the harder-edged riffing of American death metal.

Spiral Grave is a doom metal band from Maryland formed in 2021, crafting slow, heavy compositions rooted in traditional doom's mournful atmosphere and crushing riff work.

Spiral Staircase is a black metal outfit from Cleveland, Ohio, formed in 2022 under the name Spiral Staircase Coven, channeling raw misanthropic energy through orthodox black metal aesthetics.