Traumator is a thrash metal band from Münster, Germany, formed in 2014. They deliver relentless thrash metal from the Westphalian capital.

Trautonist is a post-black metal band from Koblenz, Germany, formed in 2016. They explore atmospheric, emotionally charged post-black metal from the Rhine-Moselle confluence.

Travma is a death/thrash metal band from Manfredonia in the province of Foggia, active since 2013. Their Russian/Turkish-influenced spelling of 'trauma' adds international flair to their death/thrash from the Gargano Peninsula.

Atmospheric black/blackgaze project from Brest, Belarus, founded in 2016 and built around the combination of atmospheric synthesizers, guitar, and field recordings. Their extensive catalog on Bandcamp—spanning albums like The Old Fortress, Kalevala, and Sempervirens—documents a project in constant motion, drawing from nature, mythology, and personal grief. The name, a deliberate misspelling of 'trauma,' gives their emotional and textural extremity a specifically named anchor.

Traxilium is a heavy metal band from Pinoso, Spain, formed in 2016. They play traditional heavy metal from the Alicante interior.

Tre Pistoni is an atmospheric black metal band from Ostia near Rome, formed in 2025. Their Italian name, meaning 'three pistons,' adds an industrial edge to their atmospheric black metal from the Roman coast.

Treacherous from Lyon deliver symphonic black and death metal with the betrayal and deception their name demands since 2013. Over a decade of treasonous compositions from France's second city has combined orchestral grandeur with extreme metal aggression.

Treasure Hunt is a heavy/thrash metal/rock band from Neuss, Germany. They play riff-driven heavy metal and thrash with rock accessibility.

Treblinka formed near Stockholm, Sweden in 1987 as the founding vehicle for Johan Edlund, playing raw black/death metal under pseudonyms and releasing the single "Severe Abomination" in 1989. The band recorded material for an album during this period before Edlund renamed the project Tiamat in advance of their debut Sumerian Cry (1990), which incorporated reworked Treblinka compositions. As a historical entity, Treblinka represents the earliest phase of what would become one of Scandinavia's most stylistically adventurous metal bands, operating in the primitive intersection of black and death metal that defined the underground at the close of the 1980s.