| Acronym | Definition |
|---|
| RDRA➣Rob Druppers Running Academy |
| RDRA➣Rectangular Dielectric Resonator Antenna |
| RDRA➣Regional Disaster Response Advisor |
| RDRA➣Regional Disaster Reduction Advisor (UN; various locations) |
| RDRA➣Remedial Design/Remedial Action (US EPA) |
| RDRA➣Red Deer Regional Airport (Canada) |
| RDRA➣Russian Drag Racing Association |