CSSD
- Calgary Catholic School District
- Central sterile services department
- Club Atlético Sansinena Social y Deportivo
- Consultative Subcommittee on Surplus Disposal
- Czech Sovereignty of Social Democracy
- Department of Children, Seniors and Social Development (Newfoundland and Labrador)
- Glossary of military abbreviations
- Royal Central School of Speech and Drama
- Social Democracy (Czech Republic)
- The Earth Institute