Publishers – R
- R. J. Fote Music
- R.Schroor
- Radio Corporation of America
- Rainer Tempel Musikverlag
- Rakeway Music
- Randall Standridge Music
- Rapp Verlag
- Raw Percussion Publications
- RCM Publishing
- Read Books
- Real Musical
- Really Useful Group
- Reba Productions
- Recital Music
- Reclam Verlag
- Red Poppy Music
- Reed Music
- Reedimensions
- Registry of Guitar Tutors
- Registry Publications
- Reichert Verlag
- Reimkultur Musikverlag
- Reinecke Musikverlag
- Reiskmore Music
- Renaissance Musikverlag
- Residenz Verlag
- Resolute Music Publications
- Rhinegold Publishing
- Rhythm MP
- Richard Boorberg Verlag
- Richard Strauss Verlag
- Ricordi
- Ries & Erler Musikverlag
- Right Turn
- Rilting Music
- Rittor Music
- Riverberi Sonori
- RMH
- Road Rock International
- Robert King
- Robert Kreutzer
- Robert Lienau
- Robert Martin
- Robert Smith & Co.
- Roberton Publications
- Rock House Method
- Rock School Limited
- Rock Valley Music
- Rockstarz
- Rohe Musikverlag
- Rohrdorfer Musikverlag
- Ron Harris Music
- Rondo Publishing
- Rondor Archive
- Rondor Music International
- Rose Conlon Music
- Rosehill Music
- Rosewood Publications
- Rossleigh Music
- Row-Loff Productions
- Rowman & Littlefield
- Royal Irish Academy
- Royal School of Church Music
- Rózsavölgyi és Társa
- Rubank Publications
- Rudolf Steiner Press
- Rued Langgaard Edition
- Rugginenti Editore
- Ruh Music
- Running Press
- Russian Music Publishing
- RWS Music Company
