| CSSP | California Super Stock Pulling 
| Others |
| CSSP | Cascading Style Sheets and Positioning
| Others |
| CSSP | Center for Simplified Strategic Planning
| Others |
| CSSP | Center for the Study of Scottish Philosophy
| Others |
| CSSP | Center for the Study of Social Policy
| Others |
| CSSP | Certified SonicWall Security Professional
| Others |
| CSSP | Certified Sport Security Professional
| Others |
| CSSP | Certified Sport Security Professionals
| Others |
| CSSP | Chappaqua Summer Scholarship Program
| Others |
| CSSP | Cherry Springs Star Party
| Others |
| CSSP | Cherry Springs State Park
| Others |
| CSSP | Chip Sized SAW (Surface Acoustic Wave) Package
| Others |
| CSSP | Cigarette Smoking Strictly Prohibited
| Others |
| CSSP | Circuits Systems and Signal Processing
| Others |
| CSSP | Citizen Soldier Support Program
| Others |
| CSSP | Civil Service Superannuation Plan
| Others |
| CSSP | Clear Spring Scuba Park
| Others |
| CSSP | Clear Springs Scuba Park's
| Others |
| CSSP | College of Social Sciences and Philosophy
| Others |
| CSSP | Colorado Society of School Psychologists
| Others |
| CSSP | Committee on Solar and Space Physics
| Others |
| CSSP | Community Safety and Security Program
| Others |
| CSSP | Community School Student Partnerships
| Others |
| CSSP | Community Service Scholars Program
| Others |
| CSSP | Community Service Scholarship Program
| Others |
| CSSP | Competitive Skills Scholarship Program
| Others |
| CSSP | Continuing Studies and Special Programs
| Others |
| CSSP | Corrections System Support Program
| Others |
| CSSP | Council of Scientific Society Presidents
| Others |
| CSSP | Crap Shoot Star Party
| Others |
| CSSP | Credential Security Support Provider
| Others |
| CSSP | Customer Self Service Portal
| Others |
| CSSP | Customer Specific Standard Product
| Others |
| CSSP | Cyber Security Service Provider
| Others |