Thomas Bressel from the Norman towns of Saint-Lô and Caen is a solo progressive, neoclassical metal, and jazz fusion project, blending classical virtuosity with metal intensity since 2006. Nearly two decades of multi-genre composition from Normandy have produced a unique fusion of conservatory technique and heavy music.

Thorne from Newcastle upon Tyne have been crafting progressive death metal since 2002, making them one of the northeast's longest-running prog-death acts. Over two decades of thorn-sharp compositions from the Tyneside city.

Thought Sphere is a progressive metal band from Düsseldorf, Germany, active since 1996. With three decades of activity, they are among the most veteran progressive metal acts in the Rhineland.

Thrashing Machine from Šestajovice outside Prague began as a thrash and groove metal act in 2017 before evolving toward a more progressive and groove-oriented approach. This stylistic shift reflects a band willing to expand beyond their thrash roots into more technically ambitious territory.

Three Pound Trigger is a progressive death metal band from Kauhajoki, Finland, formed in 2014. They craft technically ambitious progressive death metal.

Throes of Discordance from London craft progressive groove metal with melodic death metal elements, navigating the painful struggle of musical conflict since 2021. Their compositions channel creative tension through rhythmically complex, harmonically rich arrangements.

Through Blinded Eyes from London craft progressive metal and rock that perceives beyond physical sight since 2020. Their compositions navigate complex arrangements with the compensatory heightened awareness their visually impaired name suggests.

Thulan is a progressive black metal project from Italy, formed in 2022. Their name evokes the mythical northern land of Thule, channeling that icy mysticism through progressive black metal compositions.

Thunder Age is a heavy/progressive metal band from Matera in Basilicata, active since 2017. Their music brings ambitious heavy and progressive metal to the ancient cave-dwelling city, one of the oldest continuously inhabited settlements on Earth.