Publishers – L
- L.T.P. Publishing
- L'Arrangement Larisa Vödisch Verlag
- La Lupa Publishing
- La Nota
- Laaber-Verlag
- Lake Music
- Lakeview Music
- Lamp und Leute
- Larghetto Music
- Lark in the Morning
- Last Resort Music
- Latham Music
- Latin American Music Pub
- Lauren Keiser Music Publishing
- Laurentius Musikverlag
- Lawrence Wright Music Co
- Lawson-Gould Music Publishers
- Lazarus Edition
- LCM Publications
- Le Chant du Monde
- Learn Roots Music
- Learn To Play Music
- Learn to play publishing
- Lee Roberts Music
- Legacy Learning Systems, Incorporated
- Leonard Bernstein Music Publishing
- Leonard, Gould & Bolttler
- Les Editions du Nord
- Les Editions M.A.C.S.
- Les Presses d'Ile de France
- Les Productions d'OZ
- Les Synthétistes
- Leshnoff Publishing
- Letterio Ciriaco Edizioni
- Leu Verlag
- Leuchtturm1917
- Levy's
- Libre uitgeverij
- Licklibrary
- Lido
- Lillenas Publishing
- Limelight Editions
- Litolff
- Little Kids Rock
- Little Piper
- Lizzie Davis Publishing
- LMM
- Loeper Literaturverlag
- London College of Music
- London Drum Company
- London Pro Musica
- Lorenz Publishing Company
- Louis Oertel Musikverlag
- Loux Music Publications
- LRQ Publishing
- Luck's Music Library
- Ludwig Krenn (Bos Agy)
- Ludwig Masters
- Lugert Verlag
- Lushlife Music
- Lyon and Healy Publishing
- Lyrebird Music
- Lyrita Publishing
