Publishers
- Popular Press Ltd. 1
- Porsche Cars 1
- Porter Press International Ltd 2
- Portico D'Abitot Press 1
- Potomac Books, Inc. 2
- Potteries Omnibus Preservation Society 1
- Prancing Tortoise Publications 1
- Prc Publishing 1
- Pre-Construct Archaeology Limited 1
- Preface 2
- Prentice Hall International 1
- Prentice-Hall 4
- Prentice-Hall Inc. 2
- Presidio Press 2
- Press Syndicate Of The University Of Cambridge 6
- Prestel 5
- Prestel Verlag 1
- Price, Stern, Sloan 1
- Princeton Architectural Press 2
- Princeton University Press 19
- Prindle, Weber & Schmidt 2
- Printed For The Society By W. Bulmer And Co. 1
- Prion Books 1
- Priory Press Limited 1
- Professional Engineering Publishing 1
- Profile Books 4
- Profile Publications 11
- Progress Publishers 1
- Promak Ltd. 1
- Promotional Reprint Company 1
- Promotional Reprint Company Ltd. 2
- Propylaen 1
- Protea Book House 1
- Providence Press 1
- Pruett Publishing Company 1
- Pryor Publications 1
- Ps Publishing 1
- Psi 1
- Pt Freeport Indonesia 1
- Publi-Inter 1
- Publications Division, Ministry Of Information And Broadcasting 1
- Publications Willy Fischer 1
- Publicity Products Limited 3
- Publicity Products Ltd. 1
- Puffin 6
- Puffin Books 39
- Pumpkin Press 1
- Punch 1
- Purnell 39
- Purnell & Sons 2
- Purnell & Sons, Ltd. 7
- Purnell Book Services Limited 2
- Purnell Books 6
- Putnam 38
- Putnam & Co. Ltd. 3
- Putnam Aeronautical Books 8
- Puzzle Books Ltd. 1
- PWS Publishers 1
- Pwyllgor Mileniwm Truddyn Millennium Committee 1
- Pyramid Books 1