Trioscapes formed in Greensboro, North Carolina in 2011 around the axis of Between the Buried and Me bassist Dan Briggs, saxophonist Walter Fancourt, and drummer Matt Lynch. The trio plays instrumental music that draws equally from the Mahavishnu Orchestra, King Crimson, and Return to Forever, filtering jazz fusion through a post-metal sensibility. Their debut Separate Realities (2012) and follow-up Digital Dream Sequence were both released on Metal Blade Records.

Trip to the Morgue is a crossover thrash band from Victorville, California, formed in 2016, blending the speed and bite of old-school thrash with hardcore punk ferocity.

Tripas Sangrientas is a goregrind band from West Covina, California, formed in 2023, dealing in the visceral, low-tuned carnage of gore-obsessed grindcore.

Triple 6 is a stoner/doom metal band from Lynnwood, Washington, formed in 2018, channeling slow, fuzzed-out riffs and an occult-tinged heaviness into their sound.

Triple Cripple is a grindcore band from Carmel, New York, formed in 2016, trading in the brutal economy of short, savage tracks built for maximum sonic impact.

Tripping House is a doom metal project formed in 2023, crafting slow, oppressive compositions that lean into the genre's most hypnotic and suffocating tendencies.

Tripping the Mechanism is a doom/sludge metal band from North Charleston, South Carolina, formed in 2013, combining lumbering tempos, corrosive guitar tones, and a desolate Southern heaviness.

Tripwire is a Michigan thrash metal band formed in 2017, driven by tight, aggressive riffing and the propulsive energy characteristic of the Bay Area and Midwest thrash traditions.

Triskelion is a heavy metal and hard rock band from Phoenix, Arizona, formed in 2012, rooted in classic heavy metal songcraft with an emphasis on melody and traditional song structure.