| Acronym | Definition |
|---|
| MDDR➣Movement for the Defence of Democratic Rights (Sri Lanka) |
| MDDR➣Market Driven Demand Response (Global Energy Partners, LLC; Electric Power Research Institute) |
| MDDR➣Masters in Dentistry (various universities) |
| MDDR➣Major Depressive Disorder in Remission |
| MDDR➣Mitral Diastolic Descent Rate |