Triguna is a Chicago, Illinois band formed in 2015 that began in death/thrash metal before evolving toward a more progressive death metal sound, reflecting the city's adventurous extreme metal underground.

Trinity Test is a Los Angeles progressive/thrash/death metal band formed in 2019, weaving technical riffwork and death metal aggression through expansive, prog-inflected song structures.

Progressive death metal band from Toledo, Ohio, active since 2013, combining the technical ambition of progressive metal with the aggression and heaviness of death metal.

California atmospheric and depressive black metal project active since 2013, fusing the bleak introspection of DSBM with progressive rock structures to create expansive, emotionally consuming soundscapes.

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Turrigenous is a progressive and technical thrash metal band from Long Island, New York, formed in 2008, known for intricate compositions that blend the complexity of progressive rock with thrash metal's rhythmic drive.

Twelfth Gate is a Chicago, Illinois progressive thrash metal band formed in 2016, building on the city's long-running prog-thrash tradition with technically demanding arrangements and intricate song structures that recall the genre's 1990s peak.

Twenty Thousand Fathoms is a progressive metalcore band from Erie, Pennsylvania, formed in 2020, drawing its name from Jules Verne's ocean depths and crafting expansive, technically adventurous music that pushes the boundaries of metalcore.

Twilight Symphony is an El Paso, Texas symphonic progressive metal band formed in 2021, blending orchestral arrangements with intricate progressive metal composition in a city that sits at the crossroads of the American Southwest and northern Mexico.

Twist of Fate is a melodic progressive metal band from Akron, Ohio, formed in 2022, pursuing complex song structures and layered instrumental arrangements within the melodic progressive metal tradition.

Twist of Fate is a Portland, Oregon heavy and progressive metal band formed in 2022, blending the propulsive energy of traditional heavy metal with the technical ambition of progressive metal in the fertile Pacific Northwest scene.

Twisted Motivations is a power/progressive metal band from Vancouver, Washington, formed in 2002, one of the longer-running acts in the Pacific Northwest metal underground, blending the melodic ambition of power metal with progressive complexity.

Tyler Hutson is a Virginia-based progressive metal solo project active since 2015, exploring the technical and compositional complexity that defines the progressive metal genre.

Tyrannosaurus Dimension is an Oakland, California progressive and stoner metal band formed in 2020, fusing the heavy psychedelic riff-worship of stoner metal with complex progressive song structures and a cosmic sensibility.

Tómarúm is a progressive black metal band from Atlanta, Georgia, formed in 2019, weaving intricate song structures and dynamic shifts into a black metal framework and earning recognition well beyond the regional scene.