Publishers – P
- P. Jurgenson
- Paladone
- Pan Educational Music
- Panopoly
- Panta Rhei Uitgeverij
- Paraclete Press
- Partitura Verlag Winterthur
- Paterson
- Patterdale
- Paul Bruinen
- Paul Ibberson
- Paul Lovatt-Cooper Publications
- Paul Sacher Stiftung
- Paul Simon
- Pavane Publishing
- PCA
- Peacock Press
- Pearson Education
- Ped Xing Music
- Peer Music
- Peghead Productions
- Pelican Publishing
- Penguin Books
- Percussive Arts Society
- Peter Kneale Music
- Peter Meechan Music
- Peter Wildeman Muziek
- Peters Archive
- Peters Edition
- Petrucci Library Press
- Phil Keaggy Music
- Philip Johnston
- Philippe Caillard
- Philipzen Percussion
- Phoenix Music
- Phylloscopus Publications
- Pianissimo Publishing
- Piano Plus Inc
- Piccolo Musikverlag Berlin
- Pierswell Press
- PikCard
- Piles editorial del musica
- Pine Castle Music Publishing
- Pipeblower Publishing
- Piper Publications
- Pizzicato Verlag Helvetia
- Play Along Factory
- Play Music
- Playalong
- PlaygameMusic.Com
- Playing With Colour Publications
- Plural Publishing Inc
- PM Press
- Poco Studio
- POMO Music Publisher
- Power House Orchestrations
- Power Music Company
- PraiseSong
- Praxis Music Publications
- PreSonus
- Prima Arts
- Prima Vista Musikk
- Pro Musica mayr
- Progetti Sonori
- Promenade Publications
- Promusic Publishing
- Proza Musica
- Psychology News Press
- Pucihar Music
- Pure Tone
- Purzelbaum Verlag
- Puscoiu
- Pustjens Percussion Publications
- PWM