| Acronym | Definition |
|---|
| CSSM | Content Standard for Spatial Metadata |
| CSSM | Critical State Soil Mechanics (engineering framework) |
| CSSM | Construction Site Safety Master |
| CSSM | Common Security Services Manager |
| CSSM | Canadian Sunday School Mission |
| CSSM | Center for Survey Statistics and Methodology (Iowa State University, Ames, IA) |
| CSSM | Children's Special Service Mission (now Scripture Union; UK) |
| CSSM | Certified in Security Supervision and Management (professional certification) |
| CSSM | Children's Surf and Sand Mission (religious program) |
| CSSM | Cloud Scene Simulation Model |
| CSSM | Centre for Security Sector Management (Cranfield University; UK) |
| CSSM | Certified Self Storage Manager |
| CSSM | Centre for Statistics and Stochastic Modelling |
| CSSM | Computer Security Site Manager |
| CSSM | Child Survival and Safe Motherhood Program (India) |
| CSSM | Cleveland School of Science and Medicine (Ohio) |
| CSSM | Critical Safety Systems Manual |
| CSSM | Cactus & Succulent Society of Massachusetts |
| CSSM | Central Security Service Manual (US NSA) |