Publishers – M
Publishers: M-Disc - Music Company
- M-Disc
- M. Baron Company
- M.P. Belaieff
- Magyar Tudományos Akadémia, Zenetudományi Intézet
- Maina Publishing
- Maker's Press, The
- Maleham Publishing
- Manners McDade
- Mannheimer Musikverlag
- Mansarda Sintra
- Manual De Falla Ediciones
- Mapa Mundi
- Marbel
- Margun Music
- Mark Fielding
- Mark Foster Music
- Marko Kalkman
- Maruka Music
- Mascot Music
- Masquerade Music
- Masterclass Music
- Masters Music Publications
- Matthias Hohner
- Maurice River Press
- Max Brockhaus
- Max Eschig
- Max Hieber Musikverlag
- Mayas Music
- Mayfair Montgomery Publishing
- MCA Music
- McGann
- McNaughtan
- MCS
- McTier Music
- Medaillon Music
- Megan Claire
- Megido Publications
- Mel Bay Publications
- Melos Musik
- MEM Publications
- MenaceJimenez Publications
- Meredith Music
- Meridian Publishing
- Merion Music
- Merseburger Verlag
- Metro Gnome Music
- Metropolis Music Publications
- Michael Daugherty Music
- Microsillon
- Mieroprint Musikverlag
- Mildew Designs
- Milford Trust
- Miller Music
- Mimast
- Mimram Music
- Mirasound BV
- Missy Raines
- Mitropa Music
- Mixta Music Publishing
- MKT Musikit
- ML Associates
- Modern Drummer Publications
- Modern Part Songs (Bosworth)
- Molenaar
- Moncur
- Montague Music Publishing
- Montem Music
- MorningStar Music Publishers
- Morton Gould
- Mosch Musikverlag
- Möseler Verlag
- MPL Communications
- MT Trust
- MTI
- Multitude of Voyces
- Mundo Arts
- Murphy Method
- Music Box Publications
- Music Bridge Publications
- Music Company
Publishers: Music Exchange - Mystic Publishing
- Music Exchange
- Music Express
- Music Factory
- Music for Kids
- Music Gifts Company
- Music Ireland
- Music Marvels
- Music Minus One
- Music Partner
- Music Sales
- Music Sales Furtados
- Music Score
- Music Tech.
- Music Vault
- Music70
- Musica Baltica
- Musica Mundana
- Musica Rara
- Musica Russica
- Musicians Institute Press
- Musicians Publications
- Musiciens entre Guerre et Paix
- Musicland
- Musicom
- Musicript
- Musictek
- Musicworks
- Musik & Theater
- Musik Fabrik
- Musik Verlag Bornmann
- Musik Verlag Rappel
- Musikk-Husets Forlag
- Musikverlag Andrea Wiegand
- Musikverlag Bernhard Geiger
- Musikverlag Bruno Uetz
- Musikverlag C.F. Schmidt
- Musikverlag Geiger
- Musikverlag Hafner
- Musikverlag Harald Burger
- Musikverlag Hildner
- Musikverlag Holzschuh
- Musikverlag Josef Preissler
- Musikverlag Rainer Schottstädt
- Musikverlag Raisch
- Musikverlag Reinau
- Musikverlag Richard Stegmann
- Musikverlag Scherbacher
- Musikverlag Siegfried Rundel
- Musikverlag Varner
- Musikverlag Vogt & Fritz
- Musikverlag Wolfgang Grünbauer
- Musikverlage Hans Gerig KG
- Musikwissenschaftlicher Verlag
- Musix
- MusT
- Must Have Books
- Mustard
- Mute Song
- Múzicas Editions
- Muziekschool Niwigi
- Muziekuitgeverij De Orgelpijp
- Muzika
- My World
- Mystic Publishing
