| Abbreviation | Definition |
|---|---|
| DIRMOBFOR | Director of Mobility Forces |
| DIRNSA | Director, National Security Agency |
| DIRP | Defence Innovative Research Programme |
| DIRSP | Dynamic Infrared Scene Projector |
| DIRSPACEFOR | DIRector of SPACE FORces |
| DIRSPACEFOR | Director of Space Forces (USAF) |
| DIRT-i | Dust Infrared Test |
| DIS | Daily Intelligence Summary |
| DIS | Defense Information System |
| DIS | Died In Shame |
| DIS | Director of Installation Support |
| DIS | Distributed Interactive Simulation |
| DISA | Defense Information Systems Agency |
| DISA-LO | Defense Information Systems Agency - Liaison Officer |
| DISANMOC | Defense Information Systems Agency Network Management and Operations Center |
| DisasterAWARE | Disaster All-Hazard Warnings, Analysis, and Risk Evaluation System |
| DISC | Demonstrators For Integrated Ship Control |
| DISC | Developing In Service Course |
| DISC4 | Director of Information Systems for Command, Control, Communications and Computers |
| DISC4 | irector of Information Systems for Command, Control, Communications and Computers |