| Acronym | Definition |
|---|
| CSSB | Combat Sustainment Support Battalion |
| CSSB | County Social Service Board (North Dakota) |
| CSSB | Centre for Systems and Synthetic Biology (various locations) |
| CSSB | Committee Substitute Senate Bill |
| CSSB | Cedar Shake & Shingle Bureau |
| CSSB | Civil Service Selection Board (United Kingdom) |
| CSSB | Compatible Single Sideband |
| CSSB | Companded Single Sideband |
| CSSB | Civil Service Steering Board (UK) |
| CSSB | Combat Services Support Battalion (Australian military) |
| CSSB | Calgary Stampede Show Band |
| CSSB | Combat System Switch Board |
| CSSB | Complexe Scolaire Synergie Bobinguet (Burkina Faso school) |
| CSSB | Compagnie Secouriste Sainte Barbe (French Catholic association for teenagers) |