Trollgrad is a Brooklyn-based folk and black metal band formed in 2023, weaving pagan-influenced melodic elements and folk instrumentation into a foundation of harsh black metal.

Trollhammer is a black and Viking metal band from Salem, Oregon, formed in 2014, drawing on Norse mythological themes and cold, atmospheric riffing.

Trollkicker is a raw black metal project from Pittsburgh, Pennsylvania, formed in 2013, operating in the lo-fi, abrasive end of the genre with an emphasis on primitive intensity over production polish.

Troncale is a Los Angeles thrash metal band formed in 2021, carrying on the aggressive Bay Area and Southern California thrash traditions with sharp riffing and high-energy performances.

Troops of Doom is a thrash metal band from Louisa, Virginia, formed in 2021, delivering aggressive, riff-heavy thrash in the tradition of the genre's most aggressive acts.

Troparion is a US black metal project formed in 2022, incorporating punk elements into its raw black metal framework for a stripped-down, confrontational sound.

Vicious Heavy / Thrash Metal from Austin.

Trouble formed in Aurora, Illinois in 1979 and are widely recognized as one of the founding acts of American doom metal, often grouped alongside Candlemass, Pentagram, and Saint Vitus. Their first two albums, Psalm 9 (1984) and The Skull (1985), are landmark recordings that grafted Black Sabbath's heaviness onto a spiritual lyrical framework. The band signed to Rick Rubin's Def American label for their 1990 self-titled album and continued recording across eight studio releases.

Troughborn Son is a Midwestern black metal project formed in 2023, trafficking in atmospheric and raw black metal with a bleak, introspective character.