| Acronym | Definition |
|---|
| RSDD➣Regional and Sustainable Development Department (est. 2002; Asian Development Bank) |
| RSDD➣Room Surface Dirt Depreciation (lighting) |
| RSDD➣Road Sector Development Directorate (Pakistan) |
| RSDD➣Reciprocal Subtraction Differential RNA Display (genetics) |
| RSDD➣Royal School for the Deaf Derby (est. 1893) |
| RSDD➣Real-Time Security Data Display |
| RSDD➣Rally for the Support for Development and Democracy (Togo) |