| Rank | Abbreviation | Meaning |
|---|
| ***** | SNCA | Société Nationale de Construction Aéronautique
| |
| **** | SNCA | Sierra Nevada Cardiology Associates
| |
| *** | SNCA | Seminário Nacional de Controle e Automação
| |
| *** | SNCA | Sierra Nevada Concrete Association
| |
| *** | SNCA | Sarasota Network for Climate Action
| |
| *** | SNCA | Stuff Nobody Cares About
| |
| *** | SNCA | Shown to Cause Autosomal
| |
| *** | SNCA | surface nonspecific cross reacting antigen
| |
| ** | SNCA | Statutory Nature Conservation Agency
| |
| ** | SNCA | Sistema Nacional de Creadores de Arte
| |
| ** | SNCA | Secure Network Component Architecture
| |
| ** | SNCA | Sabine Neches Chiefs Association
| |
| ** | SNCA | Society of North Carolina Archivists
| |
| ** | SNCA | Solaris Network Cache and Accelerator
| |
| ** | SNCA | Safety Net Cash Assistance
| |
| ** | SNCA | Selena Net Culture Archive
| |
| * | SNCA | Substantially Non Coordinating Anions
| |
| * | SNCA | Synuclein, Alpha
| |
| * | SNCA | Sports Nautiques Centre Alsace
| |
| * | SNCA | Steese National Conservation Area
| |
| * | SNCA | Seoul National Capital Area
| |
| * | SNCA | Severe Non Chronic Alcoholics
| |
| * | SNCA | South Norfolk Conservative Association
| |
| * | SNCA | Swedish National Court Administration
| |
| * | SNCA | Scandinavian and Nordic Cultural Association
| |