Mangled Dreams is a Voss-based act that evolved from doom metal to thrash metal and crossover, active since 2022. The band channels the dramatic Norwegian fjord landscape into aggressive, shape-shifting compositions.

Manhir is a drone and doom metal band from Alton, England, formed in 2013. They craft crushing drone-doom compositions built on sustained heaviness and repetition.

Maniard is a stoner and doom metal act from Bordeaux, channeling the city's famed hedonistic culture into heavy, fuzz-laden grooves since 2013. The band layers languid, smoke-wreathed riffs over pounding rhythms in the tradition of classic stoner doom.

Manicomio Zero is a death and doom metal band from Savona, Italy, formed in 2016. Their Italian name meaning "asylum zero" captures the madness-tinged heaviness of their doom-death.

Mansion is a doom metal and rock band from Turku, Finland, formed in 2013. They channel occult doom through ritualistic compositions steeped in dark mysticism.

Many Suffer is a black and doom metal band from Bradford, England, formed in 2020. They fuse black metal's darkness with doom's crushing weight.

Mararah is a gothic, doom, symphonic metal, and depressive black metal band from France, formed in 2025. They blend multiple dark metal traditions into brooding, emotionally devastating compositions.

Marasmo is a stoner and doom metal band from the Community of Madrid, Spain, formed in 2011. They channel heavy, crushing doom through a stoner metal lens of distorted riffs and sluggish grooves.

Formed in Mechelen in 2008 with an explicit mission to revive the early 1990s doom-death sound, Marche Funèbre have since released ten albums and performed over 180 concerts across more than 15 countries. Key releases including Into the Arms of Darkness, Roots of Grief, and the more recent Echoes From Beyond trace the band's growth from underground act to one of Belgium's most prolific doom-death exports.