| Abbreviation | Definition |
|---|---|
| RD | Results Database |
| RD | Ringdown |
| RD | Rock Drill |
| RD&A | Research, Development and Acquisition |
| RD&E | Research, Development, and Engineering |
| RD&J | Radar Deception and Jamming |
| RDA | Range Dangerous Aria |
| RDA | Rapid Deployment for Action |
| RDA | Research, Development, and Acquisition |
| RDA | Royal Danish Army |
| RDAA | Rear Driving Axle Assembly |
| RDAISA | Research, Development, and Acquisition on Information Systems Activity |
| RDAP | Research, Development, and Acquisition Plan |
| RDAS | Requirements Analysis and Definition Summary |
| R-Day | Redeployment Day |
| RDC | Range Development Command |
| RDC | Rapid Deployment Capability |
| RDC | Recruit Division Commander |
| RDC | Regional Data Center |
| RDC | Regional Destruction Center |