| Acronym | Definition |
|---|
| CATT | Computer-Aided Translation Tool |
| CATT | Computer-Aided Test Tool |
| CATT | Combined Arms Tactical Trainer |
| CATT | Center for Advanced Technology in Telecommunications |
| CATT | Card Agglutination Test with Stained Trypanosomes (medical test) |
| CATT | Card Agglutination Test for Trypanosomiasis |
| CATT | Chinese Academy of Telecommunications Technology (Beijing, China) |
| CATT | Campaign Against Tiger Trafficking |
| CATT | Center for Advanced Transportation Technologies |
| CATT | Computer Assisted Technology Transfer |
| CATT | Contractors Association of Truckee Tahoe (California) |
| CATT | Computerized Axial Transverse Tomography (medical imaging technique; now Computed Tomography) |
| CATT | Companion Animal Touch & Therapies (Beach Park, Illinois) |
| CATT | Controlled Avalanche Transit Time |
| CATT | Computer-Automated Transportation Tool |
| CATT | Complications of Age-Related Macular Degeneration Treatment Trials (trial of Avastin vs Lucentis) |