| CUSA | Canadian United Safety Association 
| Others |
| CUSA | Carleton University Student Association
| Others |
| CUSA | Carleton University Students Association
| Others |
| CUSA | Carleton University Students' Association
| Others |
| CUSA | Cavitational Ultrasonic Surgical Aspirator
| Others |
| CUSA | Cavitron Ultrasonic Aspirator
| Others |
| CUSA | Cavitron Ultrasound Surgical Aspirator
| Others |
| CUSA | Center for Unconventional Security Affairs
| Others |
| CUSA | Centerville United Soccer Association
| Others |
| CUSA | Certified Unicenter Systems Administrator
| Others |
| CUSA | Certified Unix System Administrator
| Others |
| CUSA | Certified Utility Safety Administrator
| Others |
| CUSA | Chinese Undergraduate Student Association
| Others |
| CUSA | Chinese Undergraduate Students Association
| Others |
| CUSA | Chinese Undergraduate Students' Association
| Others |
| CUSA | Colleges and Universities Sports Association
| Others |
| CUSA | Committee on Undergraduate Studies and Advising
| Others |
| CUSA | Conference USA
| Others |
| CUSA | Contact United States of America
| Others |
| CUSA | Council of Unions of South Africa
| Others |