M-Hunter is a progressive death/gothic metal band from Moscow, Russia, formed in 2020. They push death metal into progressive territory with technical ambition.

M.A.A is a melodic heavy metal band from Oulu, Finland, formed in 2010. They craft melodic heavy metal from the heart of northern Finland.

M.A.C. of Mad is a Prague-based industrial metal act combining hellish female vocals, frantic beats, and brute guitar riffs into a raw digital hardcore assault. Their punk-attitude approach to industrial extremity, heard on releases like "Keep Music Evil," prioritizes abrasive intensity over polish.

M.A.C.E. is a thrash metal band from Terni, Italy, formed in 2024. They deliver fierce thrash metal from the Umbrian region.

A death metal and grindcore act from Ransart in Hainaut, M.A.D. operate in the Belgian underground where the extreme end of the spectrum has historically produced some of Europe's most uncompromising music. The band release material independently through Bandcamp, keeping their output within the no-frills tradition of European death-grind.

M.A.I.M. is a folk metal band from Belluno, Italy, formed in 2011. They weave folk traditions into heavy metal from the Dolomite foothills.

M.A.R.T.Y.R. is a doom/death metal band from Supraśl, Poland, formed in 1997. They craft crushing doom-death compositions steeped in oppressive heaviness.

M.D.U. is a grindcore and death metal band from Perpignan, France, formed in 2018. They deliver rapid-fire grindcore-death extremity from the French-Spanish border region.

Bronza is a thrash metal act from Zagreb, active since 2020. The band channels the aggressive energy of classic thrash into the Croatian capital's growing metal underground.