- A I T Planet Lar
- AK Press
- ATLAS Film + Medien
- Abacus
- Abaddon Books
- Abbeville Kids
- Abbeville Press
- Abstract Studio Inc
- Accent Pr
- Ace
- Ace Books
- Ace Hardcover
- Ace Trade
- Adams Media Corp
- Addison & Highsmith Pub
- Adlard Coles
- Adriana Hidalgo Editora S.A.
- Adv Films
- Adv Manga
- Advanced Concept Design
- Adventure House
- Adventure Publications
- Aeon Publishing Inc.
- Aeonian Pr
- Africa World Pr
- Aguilar
- Aisling Pr
- Akal Ediciones Sa
- Akashic Books
- Al Saqi
- Alamode Film
- Alea
- Alfaguara
- Alfaguara, S.A. Grupo Santillana,
- Alfred A. Knopf
- Algaida Editores S A
- Algonquin Books of Chapel Hill
- Alhulia S.L.
- Alianza Editorial Sa
- Allen & Unwin
- Allen Lane
- Allison & Busby
- Alma Classics
- Alternative Comics
- Alyson Books
- Amer Gramaphone Llc
- Amereon Ltd
- Amira Pr
- Ams Pr Inc
- Anarchadia Publishing
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