| CAT | Computerized axial tomography | healthcare |
| CAT | Crisis Action Team | Airforce |
| CAT | Community Acceptance Testing | Acronym |
| CAT | Computer-Assisted (or Axial) Tomography | Acronym |
| CAT | Connector Actuating Tool | oil&gas |
| CAT | Computer-Aided Translation | computing |
| CAT | Category (e.g. CAT-5 cable) | IT |
| CAT | California Advocates of Trollopy | Community abbreviations |
| CAT | Casual American Teenager | Community abbreviations |
| CAT | Citizens Area Transit | Community abbreviations |
| CAT | Classic Arcade Trip | Community abbreviations |
| CAT | Community Accessible Transport | Community abbreviations |
| CAT | Community Action Team | Community abbreviations |
| CAT | Coolcat Active Training | Community abbreviations |
| CAT | California Achievement Test | Educational abbreviations |
| CAT | Caterpillar | Educational abbreviations |
| CAT | Classroom Assessment Technique | Educational abbreviations |
| CAT | Compensatory Acceleration Training | Educational abbreviations |
| CAT | Computer Adaptive Test | Educational abbreviations |
| CAT | Computer Assisted Teaching | Educational abbreviations |
| CAT | Computerized Adaptive Testing | Educational abbreviations |
| CAT | Create A Trick | Educational abbreviations |
| CAT | Culture, Art, Technology | Educational abbreviations |
| CAT | Computer-Aided Testing | Electronics abbreviations |
| CAT | Computer Aided Testing | computing abbreviations and acronyms |
| CAT | Computer Assisted Translation | computing abbreviations and acronyms |
| CAT | Community Access Television | media abbreviations and acronyms |
| CAT | Creation And Translation | media abbreviations and acronyms |
| CAT | Creative Art Techniques | media abbreviations and acronyms |
| CAT | Critically Appraised Topic | media abbreviations and acronyms |
| CAT | Capital Asset Tracking | Military abbreviations |
| CAT | CATegory | Military abbreviations |
| CAT | Center for Army Tactics | Military abbreviations |
| CAT | combat application tourniquet | Military abbreviations |
| CAT | Computer-Assisted Training | Military abbreviations |
| CAT | Continuous Adaptive Terrain | Military abbreviations |
| CAT | Cat Action Team | Non-Profit Organizations |
| CAT | Computer Aided Translation | software abbreviations and acronyms |
| CAT | Collaborative Active Textbooks | University abbreviations |
| CAT | Common Admission Test | University abbreviations |