| Abbreviation | Definition |
|---|---|
| CLA | California Library Association |
| CLA | California Library Association's |
| CLA | Canadian Library Association |
| CLA | Connecticut Library Association |
| CLAAC | Canadian Library Association's Annual Conference |
| CLAI | Collaborative Learning Archive Initiative |
| CLAMS | Cape Libraries Automated Materials Sharing |
| CLAN | Cooperating Libraries Automated Network |
| CLAPL | County of Los Angeles Public Library |
| CLAW | C Library Absolutely Wonderful |
| CLC | Central Library Consortium |
| CLC | Connecticut Library Consortium |
| CLD | CRISPR Library Designer |
| CLEL | Colorado Libraries for Early Literacy |
| CLEO | Compact Library Extension Organizer |
| CLFB | The Central Library for the Blind, Visually Impaired and Handicapped (Israel) |
| CLIA | Community Library Inter Action |
| CLIC | Cardiff Libraries in Co |
| CLIC | Cardiff Libraries in Cooperation |
| CLIC | Consortiumcooperating Libraries In Consortium |