Thy Listless Heart from Derbyshire craft atmospheric doom metal that explores the paralysis of emotional exhaustion since 2022. Their compositions channel the lethargic, unmotivated heartache of their name through crushing, deliberate arrangements.

Thy Sinister Bloom is a doom metal band from Dublin, Ireland, active since 1996. As one of the longest-running doom acts in Ireland, they deliver slow, oppressive heaviness with nearly three decades of experience.

Thūn from London deliver doom and death metal under an Old English-styled name since 2021. Their compositions channel Anglo-Saxon linguistic heritage through crushing, historically weighted heaviness from the British capital.

Tiamat formed near Stockholm, Sweden in 1987 under the original name Treblinka, playing raw black/death metal before renaming after the Babylonian deity and releasing their debut Sumerian Cry in 1990. Under the direction of guitarist and vocalist Johan Edlund, the band underwent a series of dramatic stylistic transformations: Clouds (1992) introduced gothic influences into their death-doom foundation, and Wildhoney (1994) is widely regarded as a landmark of progressive and atmospheric doom metal that earned the band festival slots at Dynamo and Wacken. Later albums including A Deeper Kind of Slumber (1997) and Judas Christ (2002) moved toward gothic rock and alternative sounds. Tiamat are recognized as pioneers of both gothic metal and atmospheric death metal.

Tidejord blend melodic doom and post-metal under a Danish name meaning 'tidal earth,' creating expansive compositions that ebb and flow like the Nordic seas since 2023. Their sound captures the vast, oceanic quality of Scandinavian post-metal.

Time to Burn from Clermont-Ferrand have been crafting atmospheric sludge, doom metal, and post-hardcore since 2004, making them one of the Auvergne's longest-running heavy acts. Over two decades at the foot of the Chaîne des Puys volcano chain — literally a landscape of fire — their incendiary name has proven prophetically apt.

Timeless Kingdom is a raw black/doom metal project from Germany, formed in 2020. They merge the rawness of black metal with doom's crushing weight in timeless compositions.

Timesprout from Barnsley deliver doom and stoner metal with the organic, growth-themed patience their botanical-temporal name suggests since 2022. Their South Yorkshire mining-town base adds working-class authenticity to their slowly unfurling compositions.

Titane is a stoner/doom metal band from Bari in Puglia, formed in 2023. Named after the French word for titanium, their music delivers dense, heavy stoner doom from the Adriatic coast.