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- Ladybird Books
- Leaf Books
- Left Book Club
- Legas
- Legend Books an SF imprint of Random House
- Libertas Academica
- Liberty Fund
- Library of America
- LifeBound
- Lion Hudson
- Lion Publishing - now a part of Lion Hudson
- Little, Brown and Company
- Liverpool University Press
- Llewellyn Worldwide
- Longman
- Lutterworth Press
- Lippincott Williams & Wilkins - an imprint of Wolters Kluwer
Read more about this topic: List Of English-language Book Publishing Companies