Publishers
- Ashford 1
- Ashford Press Publishing 2
- Ashgate 6
- Ashgate Publishing Company 2
- Ashgrove Press 1
- Asia Publishing House 4
- Aslib 2
- Aspect Design 1
- Associated Newspapers 3
- Associated Newspapers Ltd. 4
- Associated University Press 1
- Association Internationale De Cybernetique 1
- Association Of The United States Army 1
- Aston Martin 1
- Aston Publications 22
- Atheneum 4
- Atkinson Publications Ltd 1
- Atlantic Books 4
- Atlantic Monthly Press 3
- Atlantic Publishers 5
- Atlantic Transport Publishers 2
- Atlas Books 1
- Atmosphere 1
- Atrium Press Ltd. 2
- Auckland University Press 1
- Audi Ag 1
- Augener Ltd. 31
- Augustus M. Kelley 2
- Aurora Art Publishers 2
- Aurora Publications Limited 2
- Aurum Press 5
- Australian Digest Pty. Ltd. 1
- Australian Publicity Council 1
- Australian Railway Historical Society 1
- Australian War Memorial 3
- Autobus Review Publications 2
- Autocritica 1
- Automobilia 7
- Autosport 1
- Autotechnica 3
- Aventinum 1
- Avia Books Ltd. 1
- Aviation Supplies And Academic, Inc 2
- Aviation-Usk 1
- Avon - Anglia Publications & Services 1
- Avon Gloucestershire And Somerset Environmental Monitoring Committee 1
- Avots 1
- Award Publications 7
- Axel Eliassons Konstforlag 1
- B. & H. White Publications Ltd. 1
- B. Arthaud 1
- B. Finch & Co. Ltd. 1
- B.B. Ltd. 11
- B.G. Teubner 4
- B.H. Blackwell 1
- B.T. Batsford 38
- B.T. Batsford Ltd. 38
- Babcock and Wilcox 1
- Back To Front 1
- Bailey Brothers and Swinfen Ltd. 1
- Bailey Newspaper Group 1
- Bairns Books 1
- Bairns Books Ltd. 3
- Baldwin And Cradock 1
- Baldwin, Cradock and Joy 1
- Balfour Publications 1
- Ballantine Books 3
- Ballantyne, Hanson & Co. 1
- Balzer And Bray 2
- Bancroft & Co. Ltd. 3
- Bancroft & Co.(Publishers) Ltd. 21
- Bantam Books 3
- Bantam Press 5
- Barbican Art Gallery 1
- Barefoot Books 3
- Barn Elms 1
- Barnard, Roberts & Co. Inc 1
- Barnes & Noble Books 3
- Barnes & Noble Inc. 1
- Baron Birch 1
- Baron Books 1
- Barracuda Books 19
- Barre Publishers 1
- Barrie & Jenkins 4
- Barrie & Rockliff 2
- Barrie Law 1
- Barrington Stoke Ltd. 1
- Barron's 3
- Barron's Educational Series 2
- Barry Williamson 1
- Barthes And Lowell 1
- Basic Books 3
- Basil Blackwell 31
- Bassett-Lowke Ltd. 1
- Bath City Council 1
- Baton Transport 2
- Battelle Press 1
- Battle Of Britain Historical Society 1
- Battle of Britain Prints International Ltd. 1
- Baudouin Freres 1