| Rank | Abbreviation | Meaning |
|---|
| ***** | CCSS | Centre Commun de la Sécurité Sociale
| |
| **** | CCSS | Commission des Comptes de la Sécurité Sociale
| |
| **** | CCSS | Commodity Command Standard System
| |
| ** | CCSS | Caisse Commune de Sécurité Sociale
| |
| ** | CCSS | Command Center Support System
| |
| * | CCSS | Combat Command Support System
| |
| * | CCSS | Communications-Computer Systems Security
| |
| * | CCSS | Combat Communications Support Squadron
| |
| * | CCSS | Command & Control Switching Systems
| |
| * | CCSS | Command and Control Simulation System
| |
| * | CCSS | Cadet Command and Staff School
| |
| * | CCSS | Comprehensive Community Support Services
| |
| * | CCSS | Command Commodity Supply System
| |
| * | CCSS | Caja Costarricense del Seguro Social
| |
| * | CCSS | Communications Channel Signalling System
| |
| * | CCSS | Cryptologic Combat Support System
| |
| * | CCSS | Community Charge for Standard Spending
| |
| * | CCSS | Comanche Crew Support System
| |
| * | CCSS | CSIRT Collaboration Support System
| |
| * | CCSS | Critical Combat Service Support
| |
| * | CCSS | Command Commodity Standard System's
| |
| * | CCSS | Cave Complex Setup Sheet
| |