Operating from Boonsboro, Maryland since 2016, Thonian Horde practice a traditional-leaning black metal that draws on the mythological and esoteric currents flowing through the American underground.

A US atmospheric black metal project formed in 2024, Thorndike channels the expansive, mist-laden textures the subgenre is known for, layering ambient sweep over raw black metal architecture. Still young, the project is already staking out its place in the crowded but endlessly compelling atmospheric black metal underground.

Ventura, California's Thornlord emerged in 2024 blending death and black metal into a ferocious hybrid that draws from both the brutality of death metal and the cold, malignant atmosphere of black metal. The coastal California origins add little warmth — the band's sound is decidedly grim.

Los Angeles blackened thrash act Thorns of Sin formed in 2015 and draws from the same Southern California tradition that produced many crossover-influenced metal acts, mixing black metal's cold malice with thrash's relentless velocity. The result is lean, aggressive, and uncompromising.

One of the oldest USBM bands, active since 1993. Named after the Isengard song. Released on Werewolf Records with decades of raw, bestial output.

Georgia's Thos Ælla formed in 2021 and operates in the murky, aggressive territory where death and black metal collide, drawing on both traditions without fully committing to either. The Old English name signals an interest in antiquity, and their sound carries a primitive rawness that fits the aesthetic.

Auburn, California's Those Who Live in Death formed in 2025, making them one of the newest entries in the American black metal underground. Drawing from the genre's traditional arsenal of blast-beaten fury and bleak atmosphere, the project is still in its nascent stages but arrives with a name that signals death-fixated intent.

Erie, Pennsylvania's Thoth Atlantean blend death and black metal through a lens of esoteric, occult mythology, their name invoking both Egyptian cosmology and the lost-civilization mythology of Atlantis. Formed in 2017, the band pursues an extreme metal sound with intellectual and mystical underpinnings that set them apart from straightforward genre acts.

Atlanta's Thoth Nemesis formed in 2014 and wages sonic warfare through blackened thrash, pairing the reckless speed and aggression of thrash metal with the cold, satanic atmosphere of black metal. The Georgia act pulls from both traditions without diluting either, keeping the attack raw and the mood unrelentingly dark.

Thoughtless Mind is a US depressive black metal project that emerged in 2025, trading in the introspective bleakness and raw, minimalist production that define the DSBM subgenre. Still newly formed, the project's location is unknown, but its intent — to explore the darkest interior spaces through black metal — is unmistakable.

Based in Steamboat Springs, Colorado, Thousand Year War have evolved over a career stretching back to 2011 from melodic death metal foundations toward an increasingly melodic black metal sound, a trajectory that mirrors similar developments across the American extreme metal underground. The remote Colorado mountain town setting feels appropriate for music this expansive and cold.

Phoenix's Thra formed in 2019 and occupies a brutally claustrophobic corner of extreme metal where blackened sludge, death metal, and black metal collide under the Arizona desert heat. The result is dense, punishing, and unrelenting — music that reflects the scorched harshness of the Southwest landscape.

Washington State's Thrain have been cultivating their black metal sound since 2013, operating in the Pacific Northwest underground with the cold, raw intensity the region's climate seems to inspire. The band keeps a deliberately low profile, letting the music — bleak, uncompromising, and rooted in black metal's traditional vocabulary — speak for itself.

Portland, Oregon black/thrash outfit formed in 2020, combining the cold, malevolent atmosphere of black metal with the kinetic aggression of thrash — a pairing the Pacific Northwest underground has shown particular affinity for in recent years.

Providence, Rhode Island black/thrash act formed in 2019, fusing occult black metal menace with the speed and directness of thrash from a city that has long nurtured dark and extreme underground music, adding a witchcraft-inflected edge to their sound.