Theoretic Egoism from Bari deliver death metal and grindcore under a philosophical concept since 2016. A decade of self-interested extremity from the Puglia capital.

Theory of Chaos is a brutal death metal band from the Dubrava district of Zagreb, Croatia, formed in 2015. They unleash punishing, guttural death metal with technical precision and relentless brutality.

Therein is a melodic death/thrash metal band from Geislingen, Germany, formed in 2015. They blend melodic death metal's harmonic guitar work with the velocity of thrash in the Swabian underground.

Thergothon is a funeral doom/death metal band from Kaarina, Finland, active since 1998. They are part of the legendary Finnish funeral doom tradition that helped define the subgenre.

Death metal act Therianthropy hail from Fauvillers in the Luxembourg province of Belgium and operate in the country's southern underground scene, with the band's Facebook page listing Arlon as their base. Their early demo Brazen Bull introduced the project to the Belgian extreme metal underground, and the band has maintained an active presence performing in the Ardennes region.

Theropoda is a death metal band from Stuttgart, Germany, formed in 2013 and named after the carnivorous dinosaur order. They deliver crushing death metal with a prehistoric thematic edge from Baden-Württemberg.

Thirdmoon formed in Linz, Austria in 1994, founded by Wolfgang Rothbauer and initially working in fast-paced melodic black metal before migrating toward melodic death metal over successive releases. Their debut Grotesque Autumnal Weepings (1997) established their sound, followed by Aquis Submersus (1999) and Bloodforsaken (2000) on Napalm Records, which shifted the band's approach toward heavier melodic death territory. After parting from Napalm, further albums appeared over subsequent years including Sworn Enemy: Heaven and Terrarum Exuviae (2018), marking a long-running career that spans multiple stylistic phases within the extreme metal spectrum.

Thirst of Revenge from Fuenlabrada in the Madrid metropolitan area deliver brutal death metal with the vengeful fury their name demands since 2010. Over fifteen years, they have established themselves as one of the Madrid region's most punishing death metal acts.

Thirteen Bled Promises from Madrid deliver deathcore with the visceral, blood-soaked imagery their name evokes since 2010. Over a decade and a half of activity from the Spanish capital, they have honed their approach to breakdown-driven brutality.