| CSSC | Cabin Services System Controller 
| Others |
| CSSC | Calgary Sport and Social Club
| Others |
| CSSC | California Seismic Safety Commission
| Others |
| CSSC | California Student Sustainability Coalition
| Others |
| CSSC | Central Susquehanna Soccer Club
| Others |
| CSSC | Charleston Sports and Social Club
| Others |
| CSSC | Chicago Sanitary Ship Canal
| Others |
| CSSC | Chicago Sport and Social Club
| Others |
| CSSC | Chico Student Success Center
| Others |
| CSSC | China State Shipbuilding Corporation
| Others |
| CSSC | CIS Sustainment Support Centre
| Others |
| CSSC | Cisco Secure Services Client
| Others |
| CSSC | Civil Support Skills Course
| Others |
| CSSC | Classification of Secondary School Courses
| Others |
| CSSC | Coded Switch Set Controller
| Others |
| CSSC | College of Sciences Student Council
| Others |
| CSSC | College of Social Sciences and Communication
| Others |
| CSSC | College of Social Sciences Communication
| Others |
| CSSC | College Station Soccer Club
| Others |
| CSSC | Combat Service Support Center
| Others |
| CSSC | Communication Support Services Center
| Others |
| CSSC | Communications Student Support Center
| Others |
| CSSC | Community Standards and Student Conduct
| Others |
| CSSC | Community Standards Student Conduct
| Others |
| CSSC | Compatible Stupid Source Control
| Others |
| CSSC | Compatibly Stupid Source Control
| Others |
| CSSC | Computer Science Social Club
| Others |
| CSSC | Computer Science Students Club
| Others |
| CSSC | Conejo Simi Swim Club
| Others |
| CSSC | Configurable SAT Solver Challenge
| Others |
| CSSC | Connecticut Separation Science Council
| Others |
| CSSC | Consulting Services Support Corporation
| Others |
| CSSC | Coral Springs Swim Club
| Others |
| CSSC | Credential Student Service Center
| Others |
| CSSC | Customer Service and Support Center
| Others |