| Rank | Abbreviation | Meaning |
|---|
| ***** | CASSA | Centre for Aeronautical Systems Studies and Analysis
| |
| ***** | CASSA | Cardiac Arrhythmia Society of Southern Africa
| |
| ***** | CASSA | Colorado Association of School Superintendents and Senior Administrators
| |
| **** | CASSA | Canadian Amateur Speed Skating Association
| |
| **** | CASSA | Cedar Area Select Soccer Association
| |
| **** | CASSA | Council of Agencies Serving South Asians
| |
| **** | CASSA | Consumers Association of Subang and Shah Alam
| |
| **** | CASSA | California Association of Secondary School Administrators
| |
| *** | CASSA | Coalition of Agencies Serving South Asians
| |
| *** | CASSA | Companyia d'Aigües de Sabadell
| |
| ** | CASSA | Calgary Arts Summer School Association
| |
| * | CASSA | Campaign Against Sex Selective Abortion
| |
| * | CASSA | Chinese American Senior Services Association
| |
| * | CASSA | COARSE ANALOG SUN SENSOR ASSEMBLY
| |