Machine Blast Records

unknown

Machine Elf Records

United-Kingdom

Machine Shop Recordings

USA

Machinegun

unknown

Machinery Productions

Norway

Machinery Records

Germany

Machismo Productions

Australia

Macho Corporation

unknown

Macho Records

United-Kingdom

Maciej Records

unknown

Mack-Daddy

unknown

Mackay Productions

USA

Maculata Anima Rec

Italy

Mad As Hell Productions

Germany

Mad Assocation

France

Mad At The World

USA

Mad Butchers Records

Sweden

Mad Decent

USA

Mad Dog Records

unknown

Mad Face Records

unknown

Mad Genius Studios

USA

Mad Guitar Records

United-Kingdom

Mad Lion Records

Poland

Mad Love Records

USA

Mad Maggot Records

Poland

Mad Man's Ruin Records

unknown

Mad Master Studios

Germany

Mad Messiah Music

USA

Mad Mob Records

Germany

Mad Neptune Records

USA

Mad Noise

unknown

Mad Oak Records

USA

Mad Prophet Records

Greece

Mada Idala Productions

United-Kingdom

Madacy Entertainment

Canada

Madara No Tamago

unknown

Madarikatua

unknown

Madat Productions

Indonesia

Madbreed Records

Russia

Madcase Records

unknown

Maddening Media

Germany

Maddest Chick'ndom

Japan

Maddie Records

unknown

Made in Berlin Records

Germany

Made In China Records

USA

Made In Fire Recordings

Mexico

Made In Hell

unknown

Made In Hell 666

unknown

Made In Japan Records

Japan

Made In Pain Records

USA

Made In The Shade Records

USA

Made Of Stone Recordings

Greece

Made With Hate Records

Canada

Madfish Records

unknown

Madhouse

unknown

Madhouse Music

unknown

Madhouse Records (GER)

Germany

Madhouse Records (USA)

USA

Madison Gate Records

USA

Madison Records

USA

Madkar Records

unknown

Madman Productions

Colombia

Madman Records

unknown

Madratts Records

Malaysia

Madre Muerte Productions

unknown

Maelstrom Music

Canada

Maelstrom666 Productions

Thailand

Maestro Production

Kosovo

Mafer Records

Brazil

Mafia Entertainment

unknown

Mafia Records

Spain

Mafia Underground

France

MaGaDa International

Canada

Magdalene Records

USA

Magenda

USA

Maggot

Italy

Maggot House Records

USA

Maggot Infected Torso Productions

USA

Maggot Stomp

USA

Maggote Meat Shoppe

Canada

Maggots Records

Malaysia

Maggoty Remnants Productions

Other

Magic Arts Publishing

United-Kingdom

Magic Bullet Records

USA

Magic Circle Music

Germany

Magic Dice

Other

Magic Flute

unknown

Magic Gnome

United-Kingdom

Magic Lady Records

USA

Magic Minds Records

unknown

Magic Mushrooms Records

Greece

Magic Productions

France

Magic Records

France

Magic Rope Music

Portugal

Magic Sign ENT

South-Korea

Magic Stone Records

Taiwan

Magic Wand Records

USA

Magick Disk Musick

Czechia

Magick Records

USA

Magick Rite Records

unknown