| Acronym | Meaning |
| DIM | Discrete Interface Module |
| DIP | Dual Inline Package |
| DIR | Direction |
| DISA | Defense Information Systems Agency |
| DISABL | Disable |
| DISENG | Disengage |
| DISP | Dispenser |
| DISP | Display |
| DIST | Distance |
| DIVERTR | Diverter |
| DLA | Defense Logistics Agency |
| DLR | Depot Level Repairable |
| DLSC | Defense Logistic Systems Center |
| DM | Data Management |
| DMA | Defense Mapping Agency |
| DMA | Depot Maintenance Activity |
| DMA | Direct Memory Access |
| DME | Distance Measuring Equipment |
| DMEA | Damage Modes And Effects Analysis |
| DMG | Digital Map Generator |
| DMI | Depot Maintenance Interservice |
| DMINS | Dual Miniaturized Navigation System |
| DMMH/FH | Direct Maintenance Manhours/flight Hour |
| DMSD | Depot Maintenance Study Directorate |
| DMSO | Defense Modeling Simulation Office |
| DN | Down |
| DNA | Defense Nuclear Agency |
| DNS | Doppler Navigation Sensor |
| DOC | Descend On Course |
| DOD | Department Of Defense |
| DODCI | Dept Of Defense Computer Institution |
| DODD | Department Of Defense Directive |
| DODISS | Department Of Defense Index Of Specifications And Standards |
| DOEM | Department Of Engineering Memorandum |
| DOGF | Watchdog Timer Failure |
| DON | Department Of The Navy |
| DOP | Doppler |
| DORT | Daily Operational Readiness Test |
| DP | Development Proposal |
| DP | Display Processor |
| DPET | Data Processing Equip Trnr (trident-11b101) |
| DPRO | Defense Plant Representative Office |
| DPS | Data Processing Subsystem |
| DPT | Deployable Proficiency Trainer |
| DR | Discrepancy Report |
| DR | Door |
| DRAM | Dynamic Random Access Memory |
| DRAMA | Digital Radio And Multiplexer Acquisition |
| DRB | Defense Resource Board |
| DRD | Data Requirements Description |