CA – Chemical Abstracts
CAHSL – Connecticut Association of Health Sciences Librarians
CAIN – Cataloguing and Indexing
CALIBNET – Calcutta Library Network
CALL – Current Awareness Library Literature
CALL – Canadian Association of Law Libraries
CAPL – Canadian Association of Public Libraries
CAPS – Content, Abstract and Photocopy Service (INSDOC)
CAPTAIN – Computer Aided Processing and Terminal Access Information Network (Rutgers University)
CARDS – Card Automated Reproduction Demand System
CARIS – Current Agricultural Research Information System
CAS – Current Awareness Service
CBI – Cumulative Book Index
CBIS – Computer Based Information Service
CC – Colon Classification; Classified Catalogue
CCC – Classified Catalogue Code; (The) Copyright Clearance Centre (Salem, Massachusetts)
CCF – Common Communication Format
CD – Chronological Device
CDA – Communications Decency Act
CDC – Curriculum Development Committee
CD-R – Compact Disc-Recordable
CD-ROM – Compact Disc Read-Only Memory
CD-RW – Compact Disc Re-Writable
CDS – Cataloging Distribution Service (Library of Congress); Computerized Documentation Service (UNESCO)
CEP – Continuing Education Programme
CHIN – Community Health Information Network (USA)
CI – Citation Index
CIP – Cataloging-In-Publication
CIS – Cataloguing in Source; Computer and Information Systems (New York)
CLA – Canadian Library Association
CLENE – Continuing Library Education Network and Exchange (USA)
CLIR – Council on Library & Information Resources
CLS – Certificate in Library Science
CNI – Coalition for Networked Information
COBOL – Common Business Oriented Language (Computer language)
COMLA – Common Wealth Library Association
COMPENDEX – Computerized Engineering Index
COMRC – Co-operative Machine Readable Cataloguing
CONSAL – (The) Congress of Southeast-Asian Librarians.
CONSER – Cooperative ONline SERials (PCC component)
COPOL – Council of Polytechnic Librarians (UK)
COSMIC – Computer Software Management and Information Centre
CPI – Canadian Periodical Index; Central Patent Index
CRG – Classification Research Group
CROSS (Index) – Computer Rearrangement of Subject Specialties (Index)
CSIR – Council of Scientific and Industrial Research
CTI – Current Technology Index
CUKT – Carnegie United Kingdom TrustCV – Curriculum Vitae
