Publishers
- Casdec Ltd 1
- Casemate 9
- Cassell 40
- Cassell & Co. 16
- Cassell & Co. Ltd. 39
- Cassell & Company Limited 63
- Cassell & Company Ltd 57
- Cassell Petter & Galpin 5
- Cassell, Petter, Galpin & Co. 4
- Castell Brothers 4
- Castell Brothers Ltd. 8
- Casterman 1
- Castle Books 1
- Castlemead Publications 1
- Cavendish House 1
- Caxton Editions 3
- Caxton Press 1
- Caxton Publishing Company Limited 4
- Cecil Palmer 5
- Cef Books 1
- Cement And Concrete Association 1
- Center For Air Force History 1
- Center For The Study Of Language And Information 1
- Center Of Military History United States Army 1
- Central Books Limited 2
- Centre For Alternative Technology 1
- Centro De Estudos Ornithologicos No Algarve 1
- Century 5
- Century Benham 1
- Century Publishing 5
- Cerberus 1
- Cetre Et Fondation Le Grand-Cachot 1
- Cghearth Experience Hotels 1
- Ch. R. & Cie 1
- Chad Valley Books 2
- Chalford 3
- Challenger Publications 22
- Chambre De Commerce De Grenoble 1
- Champlin Fighter Museum Press 1
- Chancellor Press 7
- Channel 4 3
- Chantry Press 1
- Chapel Hill 3
- Chapman & Hall 34
- Chapman & Hall Ltd 8
- Chapmans 1
- Chappell & Co. Ltd. 1
- Chappell Music Ltd. 1
- Charles Birchall 1
- Charles E. Merrill Publishing Co. 1
- Charles Farlow 1
- Charles Griffin & Co. Ltd. 5
- Charles Griffin & Company Limited 1
- Charles H. Kelly 5
- Charles Herissey 1
- Charles Knight 2
- Charles Scribner's Sons 34
- Charles Skilton 6
- Charles Skilton Ltd. 11
- Charles Taylor 1
- Charles Tilt 2
- Charles Vial De Sainbel 1
- Charles Westerton 1
- Charles Wilson (booksellers) Limited 1
- Charlton Kings Local History Society 1
- Charta 16
- Chartwell Books Inc. 2
- Chartwell-Bratt 2
- Chas. J. Clark 1
- Chatford House Press Ltd. 5
- Chatham Publishing 11
- Chatto & Windus 77
- Chatto & Windus Ltd 3
- Chatto, Boyd & Oliver 1
- Chatto, Boyd and Oliver 1
- Chelsea House Publishers 4
- Chelsea Publishing Co. 3
- Chene 2
- Cheona Publications 1
- Chepstow Rural District Council 1
- Chepstow Town Council 1
- Cheshire And Wirral Ornithological Society 1
- Cheshire Community Council 1
- Cheshire County Council 1
- Chester County Historical Society 1
- Chester House Press 1
- Chesterfield Borough Council 1
- Chevprime 2
- Chicago 2
- Child's Play (International) Ltd. 13
- Children's Classics 2
- Children's Digest Publications Ltd. 1
- Children's Leisure Products Ltd. 1
- Children's Special Service Mission 1
- Children's Universe 1
- Chilton Company 1
- Chiswick Press 6
- Chivers & Sons Ltd. 2
- Chris Beetles Gallery 1
- Chris Beetles Ltd. 4