Publishers – H
- H Cube
- H. L. Grahl
- H.T. FitzSimons Company
- HAFABRA Music
- Hage Musikverlag
- Hakim Ludin
- Hal Leonard
- Halter Musikverlag
- Hamelle
- Hammond Textbooks
- Hampton Music Publishers
- Handelsware
- Handwerks Music
- Hans Pizka
- Hansen House
- Happy Bubble Music
- Happy Fox Books
- Hardie Press
- Hargail Music Press
- Harlekijn
- Harmonia
- Harmonika-Express
- Harold Flammer Music
- Harper Music Publications
- HarperCollins
- Harpologie
- Hast Du Töne
- Haus der Musik Wiesbaden
- Hawes Music
- Hebu Musikverlag
- Heinrichshofen
- Heinz Haubrich
- Helbling Musikverlag
- Helm und Baynov
- Helmut Frowein
- Henk-Doeke Music
- Henle Verlag
- Henri Elkan Music
- Hensel Songs Online
- Heritage Music Press
- Heugel
- Heuwekemeijer Muziekuitgeverij
- Hexamusic
- Hey Presto Strings
- Hildegard Publishing Company
- Hilltop Publications
- Himalaya Music
- Hindsley
- Hinrichsen
- Hinshaw Music
- Hip-bone Music
- Hit Diffusion
- Hoeflich
- Hofmeister
- Holland Music
- Holley Music
- Homespun
- HoneyRock Publishing
- Hong Kong University Press
- Hope Publishing Company
- Hornists' Nest
- Hörverlag
- Hotlicks Videos
- Houben Edition
- Houston Publishing, Inc.
- Howe Records
- Hubbard
- Hudson Music
- HUG Musikverlage
- Huiksi Music Company
- Humm Publishing
- Hunt Edition
- Hutter Music
- HX Music
