| Acronym | Definition |
|---|
| CSSD | Central School of Speech and Drama (University of London, UK) |
| CSSD | Central Sterile Supply Department |
| CSSD | Court Support Services Division (Connecticut) |
| CSSD | Canadian Society for Social Development |
| CSSD | Certified Specialist in Sports Dietetics |
| CSSD | Combat Service Support Detachment (USMC) |
| CSSD | Combat Service Support Detachment |
| CSSD | Central Sterile Services Department |
| CSSD | Calgary Roman Catholic Separate School District |
| CSSD | Central States Schools for the Deaf |
| CSSD | Chinese Society for Sustainable Development |
| CSSD | Coordinator of Services for Students with Disabilities |
| CSSD | Central Square School District (New York) |
| CSSD | Canadians for Safe and Sober Driving |
| CSSD | Ceská Strana Sociálnì Demokratická (Czech Social Democratic Party) |
| CSSD | Combat Service Support Division (US Army) |
| CSSD | Computer Services and Systems Division |
| CSSD | Computer Systems Solutions Design (Norwood, CO) |
| CSSD | Computer Supported Spiritual Development |
| CSSD | Computer Supported Simulations Division |