| Abbreviation | Definition |
|---|---|
| CGUL | C General Utility Library |
| ChemAbstr | Chemical Abstracts |
| ChemBiolInteract | Chemico-Biological Interactions (Ireland) |
| ChemInd | Chemistry and Industry (London) |
| CHFM | Center for the History of Family Medicine |
| CHGBL | Charles H. Gere Branch Library |
| ChiJPrevMed | Chinese Journal of Preventive Medicine |
| CHL | C Hypertext Library |
| CHLA | Canadian Health Libraries Association |
| CHM | Center for (the) History of Medicine |
| CHOM | Center for (the) History of Medicine |
| CHPL | Chapel Hill Public Library |
| CHPL | Cherry Hill Public Library |
| CHPL | Cincinnati and Hamilton County Public Library |
| CHPL | Clarksburg Harrison Public Library |
| CHRL | Central Highlands Regional Library |
| CHSL | Cleveland Health Sciences Library |
| CI | Collective Index |
| CIA | Courtauld Institute of Art |
| CIDL | Clarkston Independence District Library |