Chaos Horde was a thrash metal band from Baton Rouge, Louisiana, active in the mid-1980s alongside other early Louisiana metal acts like Exhorder and Graveyard Rodeo. Their sound combined the speed and aggression of hardcore with the technical riff work of heavy metal, leaving behind a demo recorded in 1986 that remains a cult item in the local underground.

Chaos Inception is a death metal band from Huntsville, Alabama, formed in 2008 by veterans of the local scene, that delivers relentless blasting death metal drawing on Sumerian mythology and occult themes. Released on Lavadome Productions, their albums Collision with Oblivion and The Abrogation established them as one of the more ferocious acts in the US underground, with a third full-length, Vengeance Evangel, arriving in 2025.

Chaos Machine is a progressive death metal band from Bangor, Maine that has been building a following in the New England underground since forming around 2010. Their self-titled 2017 album combines the raw power of thrash with progressive tendencies and melodic guitar work.

Chaos Moon is a black metal project founded in Philadelphia by Alex Poole, blending raw black metal with doom and funeral doom influences into a sound of dense atmospheric despair. Active since the mid-2000s with breaks and reformations, their 2017 album Eschaton Mémoire is considered their most critically acclaimed work.

Chaos Reigns is a thrash metal band from Youngstown, Ohio, formed in 2010, that delivers straightforward, aggressive thrash in the tradition of the classic American bands that shaped the genre. The band features members trained at respected music programs including Berklee College of Music and Youngstown State's Dana School of Music.

Chaos Relic is a death metal band from Jacksonville, Florida, drawing on the classic Florida death metal tradition with a lineup featuring current and former members of Yashira, Rhythm of Fear, and Graveview. The band released their self-titled debut in 2024.

Chaos Ritual is a groove and thrash metal band from Cincinnati, Ohio that formed on the city's east side and quickly built a local following, opening for national acts including Soulfly, Geoff Tate, and Sanctuary. The band later continued under the name Critical Khaos.

Chaos Sanctuary is a technical death metal trio from New Jersey featuring members of Condition Critical, Volcandra, and Legionary, known for melding tech-death with djent, thrash, and jazz-fusion influences. Their 2023 concept album Instrumentality is built around the themes of Neon Genesis Evangelion.

Chaos Sculptor is a black and death metal project from New Orleans, Louisiana, created by guitarist Darrin Lett as a solo recording effort with session drums handled by a member of the Polish band Deathspawn. The project channels the raw aggression of both black and death metal with independent, self-produced releases.