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)
Manky Melters (Celtic Punk)
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)
Mourning Wood (Folk-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)