Publishers – L
- Laaber-Verlag
- Label Rapace
- Ladybird
- Lak Publishing
- Lake Forest College
- Lake Union Publishing
- Lannoo
- Lansdowne Books
- Larkin Publications LLC
- Lars Muller Publishers
- Last Gasp, U.S.
- Latin America Bureau
- Laughing Elephant
- Laurence King Publishing
- Lawrence Erlbaum Associates Inc
- Lazuli
- Legend Times
- Legends Publishing
- Lehigh University Press
- Lerner Publishing Group
- Les Editions M.A.C.S.
- Leu Verlag
- Leuven University Press
- Lever Press
- Lexington Books
- Leyland Publications, U.S.
- Libraries Unlimited
- Library of America
- Libreria Musicale Italiana
- Libri Publishing
- Life Drawn
- Liffey Press
- Lilliput Press
- Limelight Editions
- Lion Books
- Lion Hudson Plc
- Liontree Publishing
- Lit Verlag
- Little Blue Readers
- Little Brother Books
- Little Genius Books
- Little Island
- Little Simon
- Little Tiger Press
- Little Toller Books
- Little, Brown & Company
- Liturgical Press
- Liveright Publishing Corporation
- Liverpool History Press
- Liverpool University Press
- Lives and Letters
- LMH Publishing
- LMM
- Loft Publications
- Logaston Press
- LOM Art
- London Chamber Orchestra
- London College of Music
- London Stereoscopic Company
- Loomis House Press
- Lorenz Books
- Lorenz Publishing Company
- Louisiana State University Press
- Loveyourhen
- LSU Museum of Art
- LSU Press
- Luath Press
- Lulu.com
- Lume Books
- Luncheon Magazine
- Lund University Press
- Luster
- Lutheran University Press
- Lutterworth Press
- Luxury Book Company
- Lyons Press
