Tethra from Novara craft death and doom metal named after the Fomorian king of Irish mythology since 2010. Over fifteen years from the Piedmontese rice capital channels Celtic mythology through crushing Italian extreme metal.

Tetramorphe Impure from Alessandria deliver doom and death metal under a name referencing the impure four-faced beings of biblical vision since 2025. Their Piedmontese base channels apocalyptic theology through crushing compositions.

Tetraskel is an epic blackened doom metal band from Ermua, Spain, formed in 2016. They combine epic grandeur with blackened atmosphere and crushing doom from the Basque Country.

Thaclthi from Volterra in the Tuscan hills craft black, death, and doom metal from the ancient Etruscan hilltop city since 2013. Over a decade from this medieval Tuscan fortress — setting of the Twilight novels — has produced compositions as ancient and dark as the city's underground passages.

Thamuz is a melodic doom metal band from Kangasniemi, Finland, formed in 2020. They deliver sorrowful, melodic doom from the rural Finnish heartland.

Antwerp instrumental doom/stoner metal band Tharsis released their self-titled debut in July 2025, drawing praise for its combination of fuzz-heavy riffing, psychedelic space-rock passages, and unexpected shifts into drone and amplifier feedback. The record cites clear kinship with Bongzilla, Church of Misery, and Weedeater while incorporating narrative-driven samples that give the album a darkly cinematic quality.

Thasaidon from France deliver death and doom metal named after Clark Ashton Smith's fictional dark god since 2021. Their weird fiction reference drives compositions of archaic, cosmic doom steeped in pulp-era horror literature.

The 11th Hour is a Dutch doom/death metal project founded in 2008 by Ed Warby, veteran drummer of Gorefest and Ayreon, who performs all instruments and clean vocals on the recordings. The debut album Burden of Grief (2009) featured guest harsh vocals from Rogga Johansson, and their second album Lacrima Mortis (2012) featured an expanded full-band lineup including former Gorefest guitarist Frank Harthoorn. The project is currently inactive, but its two albums stand as accomplished entries in the melodic death-doom tradition.

The Abbey is a Finnish doom metal quintet formed in 2021 around vocalist Jesse Heikkinen (Iterum Nata) and co-vocalist Natalie Koskinen of funeral doom act Shape of Despair, with the lineup completed by drummer Vesa Ranta (ex-Sentenced) and guitarist Janne Markus (The Man-Eating Tree). Their debut album Word of Sin (2023) on Season of Mist weaves ritualistic themes drawn from esoteric belief systems into a sound blending progressive doom, gothic metal, and dark rock. The combination of Heikkinen's and Koskinen's contrasting vocal approaches is central to the band's distinct identity.