Publishers
- Crecy 2
- Crecy Books 2
- Crecy Publishing Limited 9
- Creel Press 1
- Cresset Editions 1
- Cresta Books 1
- Cricket Books 1
- Croesor Junction Press 1
- Croil 1
- Croner Publications 1
- Croom Helm 8
- Croom Helm Ltd. 1
- Crosby Lockwood 1
- Crosby Lockwood and Son 4
- Crosby Lockwood And Son Ltd 1
- Crossprint 1
- Crown Publishers 1
- Crown Publishers Inc. 2
- Crowood 2
- Crowswing Books 2
- Crystal Palace Foundation 1
- Csiro Publishing 1
- Cumberland & Westmorland Antiquarian & Archaeological Society 9
- Cumbrian Railways Association 1
- Cupples & Leon Company 1
- Curwen Books 1
- Cushing-Malloy Inc 1
- Cwmbran Community Press Ltd. 1
- Cwmni Cymraeg Foyle 1
- Cwmni Urdd Gobaith Cymru 1
- Cwmni Y. Wasg Eglwysig Gymreig 1
- Cyhoeddedig Gan D. O'Brien Owen 1
- Cyhoeddiadau Barddas 2
- Cymric Federation Press 1
- D. Appleton & Company 2
- D. Appleton And Company 3
- D. Bradford Barton 21
- D. Brown & Sons Limited 28
- D. Lothrop & Company 1
- D. Mortimore 1
- D. Reidel Publishing Company 6
- D. Salesbury Hughes 1
- D. Van Nostrand 1
- D. Van Nostrand Company 1
- D. Wardale 1
- D. Wyllie & Son 1
- D.C. Thomson & Co Ltd. 48
- D.S. Brewer 1
- D.V. Publications Ltd. 11
- D.W. Willoughby E.R. Oakley 1
- Da Capo Press 1
- Dahne Verlag 1
- Daily Express 256
- Daily Graphic 1
- Daily Herald 2
- Daily Mail 2
- Daily Mirror 7
- Daily Mirror Books 1
- Daily Post 1
- Daily Sketch & Sunday Graphic Ltd. 5
- Daimler-Benz 1
- Dakini Media Ltd 1
- Dalesman Books 1
- Dalesman Publishing Company Ltd. 2
- Dalrymple & Verdun Publishing 2
- Dalton Watson 11
- Dalton Watson Fine Books 3
- Dana Estes & Company 1
- Daniel O'Connor 1
- Darf Publishers Ltd 1
- Dartmoor Preservation Association 1
- Darton & Co. 3
- Darton And Clark 2
- Dave Watson Solutions Ltd 1
- David & Charles 115
- David Bangs 1
- David Bateman 1
- David Bennett Books Ltd. 1
- David Bogue 1
- David Bridge & Co. Ltd. 1
- David Bull Publishing 3
- David C. Cook Publishing Co. 1
- David Fickling Books 2
- David Fleming 1
- David Harris 1
- David Martin 1
- David McKay 1
- David McKay Company 5
- David Nutt 14
- David Ogilvy 1
- David R. Godine 2
- David St John Thomas 8
- Davis-Poynter 1
- Dawne-Leigh Publications 1
- Dawson 1
- Dawson Publications 1
- Dawsons Of Pall Mall 2
- Day & Son 1
- DBI Books Inc. 1
- De Gruyter Open Ltd 1