| Abbreviation | Definition |
|---|---|
| CASW | Canadian Association of Social Workers |
| CAT | Computer Association of Thailand |
| CATA | Cambodia Association of Travel Agents |
| CATA | Canadian Advanced Technology Alliance |
| CATA | Canadian Athletic Therapists Association |
| CATA | Commonwealth Association of Tax Administrators |
| CATB | Construction Association of Thunder Bay |
| CATESOL | California Teachers of English to Speakers of Other Languages |
| CATG | Canadian Association of Teachers of German |
| CATI | Canadian Automotive Trucking Institute |
| CATI | Carolina Association of Translators and Interpreters |
| CATJ | Central Association of Teachers of Japanese |
| CATS | Canadian Association for Translation Studies |
| CATS | Canadian Association of Thoracic Surgeons |
| CATS | Communications And Technology Society |
| CAUS | Canadian Association For Underwater Science |
| CAVV | Corps Adspiranten VerkeersVlieger |
| CBBA | Christian Black Belt Association |
| CBC | Chicago Biomedical Consortium |
| CBE | Council of Biology Editors |