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- Caister Academic Press UK
- Cambridge University Press UK
- Candlewick Press
- Canongate Books
- Carcanet Press, Manchester
- Carlton Books UK
- Carlton Publishing Group UK
- Carnegie Mellon University Press
- Casemate Publishers - military history publisher
- Cassell
- Cengage Learning
- Central European University Press
- Century, imprint of Random House publishers.
- Chambers Harrap
- Charles Scribner's Sons
- Chatto and Windus
- Chick Publications
- Chronicle Books
- Churchill Livingstone - an imprint of the giant Elsevier
- City Lights Publishers
- Cloverdale Corporation
- Cold Spring Harbor Laboratory Press
- Collector's Guide Publishing
- Collins - now part of HarperCollins
- Columbia University Press
- Concordia Publishing House
- Constable & Co Ltd - now part of Constable & Robinson
- Continuum International Publishing Group - also known as Continuum
- Copper Canyon Press
- Cork University Press
- Cornell University Press
- Coronet Books - a paperback imprint of Hodder & Stoughton
- Craftsman Book Company
- CRC Press
- Crocker & Brewster
- Crown Publishing Group - subsidiary of Random House.
Read more about this topic: List Of English-language Book Publishing Companies