Publishers – I
- I.M.P.
- i2i Publishing
- Ian Harrold Music
- Ibermúsica
- IC Music
- ID Music
- IFO music & media for organ
- IkuMa Publications
- IKURO Edition
- IMC
- IMP Archive
- Impro Circle
- Indiana University Press
- InEllis
- Inlab Networks
- Innenland Musikverlag
- Inntal Musikverlag
- Insel Verlag
- Inspire Editions
- Int. Sternscher Musikverlag
- Integrity Music
- Inter Music Network
- Interlude
- International Music Diffusion
- International Opus
- Intersong Basart
- Intrada Muziekuitgave
- Intuition
- Inventio Musikverlag
- Iris Musikverlag
- Irisiana Verlag
- Irmãos Vitale
- Iron Horse Entertainment
- Islamic Foundation
- Island Music
- Israel Brass Woodwind
- Israel Music Institut
- Isuku Verlag
- Itchy Fingers Publications
- iton Musikverlag Ingo Klingbeil
