DSD
- Australian Signals Directorate
- Data structure diagram
- Davis School District
- Dead man's switch
- Delaware School for the Deaf
- Department of Social Development (disambiguation)
- Det Stavangerske Dampskibsselskap
- Detrusor sphincter dyssynergia
- Deutsches Sprachdiplom
- Direct Stream Digital
- Disorders of sex development
- Do Something Different
- Document Structure Description
- Downing Street Declaration
- Drainage Services Department
- Köppen climate classification
- New Zealand Distinguished Service Decoration
- PADI Discover Scuba Diving
- Raindrop size distribution
- United States District Court for the District of South Dakota