- A & C Black
- A & C Black (Childrens books)
- A & C Black Publishers Ltd
- A Butterworth-Heinemann Title
- A Cappella Books,U.S.
- A i T/Planet Lar
- A K Peters
- A-LIST PUBLISHING
- A4Tech
- AA Publishing
- Aarhus University Press
- Abacusspiele
- ABADDON
- Abbeville Kids,US
- Abbeville Press
- Abbeville Press Inc.,U.S.
- Abbey Home Media
- Abbey Home Media Group
- Abbey Press
- Abbeydale Press
- ABC-CLIO Ltd
- Abdo Publishing Company
- Abhinav Publications
- Abingdon Press
- Abingdon Press,U.S.
- Aboriginal Studies Press
- About Comics
- Abrams
- Abrams Books for Young Readers
- Absolute Classics
- Absolute Press
- Abson Books London
- Abstract Studio
- Acacia
- Academic Press
- Academic Press Inc
- Academy Chicago Publications
- Accent Press Ltd
- Acclaim
- Accuratus
- Ace Books
- Acer
- ACLS History E-Book Project
- Acorn Media
- Acoustic Energy
- ACP Books
- ACP Publishing Pty Ltd
- Acropolis Books (GA)
- ACTA Publications
- Actar
- ACTIVISION
- Acumen Publishing Ltd
- Adamant Media Corporation
- Adams Media
- Adams Media Corporation
- Addicus Books
- Addison-Wesley
- Adidas
- Adlard Coles Nautical
- Adlibbed Ltd
- Admiralty Charts
- Adobe Dev Library
- Adobe Systems
- Adonis & Abbey Publishers Ltd
- Adv Films
- ADV Manga
- Adventure Publications(MN)
- Adventures Unlimited Press
- Adventures Unlimited Press,U.S.
- AEG
- Aegypan
- Aeon Books Ltd
- Aflame Books
- Africa Research & Publications
- AFRICA WORLD PRESS
- African American Images
- African Books Collective
- After the Battle
- AG Neovo
- Agate Publishing
- Age Concern Books
- AGENT PROVOCATEUR
- AGFA Photo
- Agile Rabbit
- Aguilar
- AIAA
- Aiptek
- Air Britain Historians Ltd
- Air Data Publications
- Air Pilot Publisher Ltd
- Air Research Publications
- Airlift
- Airplan Flight Equipment
- AK Press
- ak tronic
- Akacia
- AKAI COM
- AKASHIC BOOKS
- Akashic Books,U.S.
- AKG Acoustics
- ALA Editions,US
- Aladdin Mix
- Aladdin Paperbacks
- Aladdin Paperbacks, S&S
- Alan
- Alan Godfrey Maps
- Alan Rodgers Books
- Alan Rogers Guides Ltd
- Alaska Northwest Books
- Alastair Sawday's
- Alba
- Alba House
- Alba House,U.S.
- Albert Whitman & Company
- ALD Design & Print
- AldineTransaction
- Alexander Books
- Alfaguara
- Alfred A Knopf
- Alfred A. Knopf
- Alfred Publishing
- Alfred Publishing Co., Inc.
- Alfred Publishing Company Inc
- Algonquin Books of Chapel Hill
- Alianza Editorial S.A.,Spain
- Alison Green Books
- Alison Hodge
- Alive Books
- Allen & Unwin
- Allen and Unwin
- Allen Lane
- Allied Telesyn
- Allison & Busby
- Alloway Publishing Ltd
- Allworth Press
- Allworth Press,U.S.
- Allyn & Bacon
- Alma Books Ltd
- Alpha Books
- Alpha International
- Alpha Science International Ltd
- Alpine Publications,U.S.
- Als
- AltaMira
- AltaMira Press,U.S.
- Altec Lansing Technologies
- Alternative Comics
- Althos
- Altman Publishing
- Alyson
- Alyson Publications Inc
- Amacom
- Amadeus Press
- Amana
- Amazing Baby
- Amazon Basics
- Ambassador Publications
- Amber Books Ltd
- Amber Lane Press Ltd
- Amber Lotus
- Amber-Allen Publishing,U.S.
- Amberley Publishing
- Amberwood Publishing
- America's Test Kitchen
- American Academy of Pediatrics
- American Bar Association
- American Bible Society
- American Cancer Society
- American Chemical Society
- American College of Physicians
- American Diabetes Association
- American Education Publishing
- American Girl Publishing Inc
- American Institute of Physics
- American Map
- American Mathematical Society
- American Medical Association
- American Psychiatric Press Inc.
- American Quilter's Society
- American World Pictures
- Amerotica
- AMG Publishers
- AMHERST MEDIA, INC.
- Amherst Media,U.S.
- AMIRSYS
- Amirsys, Inc
- Amistad Press
- AMMO Books LLC
- Ammonite
- Amorata
- Amphoto Books
- AMR Racing
- Amsco Music
- Amsco Publications
- Amsterdam University Press
- Anagrama, Editorial S.A.
- Analytic Press,U.S.
- Anatomical Chart Co ,U.S.
- Ancestry.com
- Anchor Bay Entertainment
- Anchor Bay Home Entertainment
- Anchor Books
- Andersen Press Ltd
- Andre Deutsch Ltd
- Andrea Press
- Andrew Brodie Publications
- Andrew Lloyd Webber
- Andrew Robson Bridge Club
- Andrews McMeel
- Andromeda Children's Books
- Anforme Ltd
- Angel Books
- Angel City Press,U.S.
- Angel's Share
- Anglia Young Books
- Anglo-Saxon Books
- Anmol Publications Pvt Ltd
- Annick Press
- Annick Press Ltd ,Canada
- Anomalist Books LLC
- Anova
- Anshan Ltd
- Antarctic Press
- Antarctic Press Inc
- Anthem Press
- Antique Collectors' Club Ltd
- Antony Rowe Publishing Services
- Anvil Books (Childrens Press)
- Anvil Press Poetry
- AOC
- AOTA Press
- APA Publications
- APA Publications Pte Ltd
- Aperture
- Apex Publishing Ltd, Essex
- Aphrodisia
- Apocryphile Press
- Apogee Books
- Apollos
- Apple
- Apple Press
- Appletree Press Ltd
- Applewood Books
- Applewood Books(MA)
- Apply2 Ltd
- APress
- APRESS ACADEMIC
- Aquamarine
- Arabesque Distribution
- Arabia Books Ltd
- Arc Manor
- Arc Publications
- Arcade
- Arcade Publishing
- Arcadia Books
- Arcadia Publishing (SC)
- Archaeopress
- Archeion Press, LLC
- Archetype Publications Ltd
- Archie Comic Publications, Inc
- Archipelago Books
- Architectural Press
- Archos
- Arcturus foulsham
- Arcturus Publishing
- Arcturus Publishing Ltd
- Arden Shakespeare
- ARE Press
- Arena Books
- Argentum
- Argos
- Argyll Publishing
- Ariadne Press
- arima publishing
- Aris & Phillips
- Aris & Phillips Ltd
- Arnoldsche
- Arnoldsche,Germany
- Arquitectos Mexicanos Editores
- Arris Books
- Arrow Books Ltd
- Arrow Films
- Arsenal Pulp Press
- Arsenale
- Arte Publico Press
- Artech House
- Artefact Media
- ARTHAUS
- Arthur A. Levine Books
- Arthur H.Stockwell Ltd
- Artificial Eye
- Artnik
- Artsmagic
- Ascension Press
- Ashgate
- Ashgrove Publishing
- Ashmolean Museum
- ASHP
- Aspen Publishers Inc.,U.S.
- Assembled Stories
- Asser Press
- Assimil
- Assistedreadingbooks.com Inc
- Assouline
- ASTD Press
- Astrolog Publishing
- ASUS
- At Heart Ltd
- ATARI
- Atelier Books
- Athena Press Ltd
- Atheneum Books
- Athey Educational
- ATL Telecom
- Atlantic Books
- Atlantic Monthly Press
- Atlantic Publishing Co
- Atlas Press
- Atmosphere Publishing
- ATMT
- ATOM
- Atomic
- Atria Books
- Auckland University Press
- Audica
- Audio-Technica
- audiobooksonline.co.uk
- Auerbach Publications
- Augsburg Fortress
- Augsburg Fortress Publishers
- August House Publishers
- Aurora
- Aurora Metro Publications
- Aurora Press
- Aurora Publishing
- Aurora Publishing Inc
- Aurum Press Ltd
- Austin & Macauley Publishers
- Australian Fishing Network
- Australian Theological Forum
- Auteur Publishing
- Authentic
- Authentic Lifestyle
- Authentic Media
- Authentic Media Word
- AuthorHouse
- AuthorHouse UK DS
- authorsonline.co.uk
- Automobile Association
- Autonomedia
- Autumn Publishing Ltd
- Ava Publishing
- Avalon Group
- Avalon Publishing Group
- Avalon Travel
- Avalon Travel Publishing
- Avalonia
- Avatar Press
- Ave Maria Press
- Ave Maria University Press
- Avedition
- Aventine Press
- Avenue Entertainment
- Avery Publishing Group
- Avid Entertainment
- Avocent
- Avon a
- Avon Books
- Avon Inspire
- Avon Red
- Avonside Publishing Ltd
- Award Publications Ltd
- Axiom Films International Ltd
- AYEBIA CLARKE PUBLISHING LTD
- AYP Publishing