| Abbreviation | Definition |
|---|---|
| SDME | Software Development and Maintenance Environment |
| SDMO | Specification and Data Management Office |
| SDMP | System Development Master Plan |
| SDMX | Space Division Matrix |
| SDN | Send Data Now |
| SDN | Service Drawing Number |
| SDN | System Development Notification |
| SDNMC | San Diego Naval Medical Center |
| SDNRIU | Secure Digital Net Radio Interface Unit |
| SDNS | Secure Data Network System |
| SDO | Senior Defense Official |
| SDO | Ship's Debarkation Officer |
| SDP | Small Diameter Bomb |
| SDP | Software Development Plan |
| SDP | Standard Distance Package |
| SDP | Strategic Distribution Platform |
| SDP | Supply Distribution Point |
| SDP | System Decision Papers |
| SDP | System Development Plan |
| SDP | Systems Development Process |