‡ Macaria (Folk-metal)
‡ Mael Mórdha (Folk/Doom Metal)
Magda Przychodzka (Folk-metal)
‡ Maglor (Folk-metal)
Mago de Oz (Folk/Celtic Metal)
The Mahones (Celtic Punk)
‡ M.A.I.M. (Folk-metal)
Maladecia (Folk-metal)
Malasañers (Celtic Punk)
Mandragora Thuringia (Folk-metal)
Manntra (Industrial metal / Folk-metal)
Månegarm (Viking/Black/Folk-metal)
‡ Marțolea (Folk/Black metal)
‡ MaterDea (Symphonic Folk Metal/Rock)
The McGonagalls (Celtic Punk)
McScallywag (Celtic Punk)
Medved’ (Folk-metal)
Melechesh (Black/Middle Eastern metal)
Merkfolk (Folk-metal)
‡ Metal Styx (Symphonic Black Folk-metal)
MetalXis (Instrumental Folk Melodic Metal)
‡ Methysos (Folk-metal)
Metsatöll (Folk-metal)
Mickey Rickshaw (Celtic Punk)
Midgard (Viking/Folk-metal)
‡ Midnattsol (Melodic/Folk-metal)
Midvinterblot (Folk-metal)
‡ Miellnir (Folk/Viking Metal)
Mileth (Folk-metal)
‡ Minhyriath (Folk/Death Metal)
‡ Minos (Folk-metal)
Minotaurus (Celtic Folk-metal)
‡ Minotaur’s Redemption (Folk/Trash)
Mirrorshield (Power/Folk-metal)
‡ The Mist and the Morning Dew (Folk-metal/Doom)
Mistfolk (Folk-metal)
‡ Mithotyn (Viking/Black Metal)
Mjød (Folk/Viking Metal)
‡ Moksh (Vedic Metal)
‡ Mondstille (Folk/Black Metal)
‡ Mondvolland (Folk/Black Metal)
‡ Mongol (Folk/Death Metal)
Moonsorrow (Folk/Pagan/Black Metal)
Morgarten (Folk/Black Metal)
‡ Morgenstern (Folk-metal)
Morhana (Folk-metal)
‡ Moriandum (Folk influenced Black Metal)
‡ Morok (Folk-infl. Pagan Black Metal)
Moriquendi (Atmospheric Folk-metal)
Mormieben (Pirate/Folk-metal)
Mornir (Folk/Pagan Metal)
‡ Moss of Moonlight (Black/Folk-metal)
Motanka (Mystic Metal)
Mr. Irish Bastard (Folkpunk / Folk-rock)
Munarheim (Symphonic Dark Folk Metal)
‡ Munruthel (Black Pagan Folk-metal)
Der Münzer (Mittelalter Hardrock)
‡ MuyzKKubuN (Folk-metal)
Myrath (Oriental Folk-infl. Prog. Metal)
‡ Myrkgrav (Blackened Folk-metal)
‡ Myrkvar (Folk/Viking Metal/Black Metal)
Myrkvedr (Folk / Viking metal)
Mysteria Mortis (Pagan/Folk-metal)
MystTerra (Folk/Industrial/Metal)