| DAAS | Desktop As A Service |
| DASD | Direct-Access Storage Device |
| DBMS | Database Management System |
| DCIM | Data Center Infrastructure Management |
| DCU | Digital Computer Unit / Digital Federal Credit Union |
| DEFAULT | |
| DEFORESTATION | The Clearing Or Thinning Of Forests By Humans |
| DELL | Digital Electronic Link Library |
| DELUSIONAL | |
| DEPOSITION | |
| DFM | Design For Manufacturing / Dance Floor Makeout |
| DGSA | Dangerous Goods Safety Advisor |
| DHA | Docosahexaenoic Acid |
| DIKSHA | Digital Infrastructure For Knowledge Sharing |
| DILIGENT | |
| DILKASH | |
| DISCERNMENT | |
| DLF | Delhi Land And Finance |
| DLP | Data Loss Prevention |
| DMD | Duchenne Muscular Dystrophy |
| DME | Durable Medical Equipment |
| DMF | Dimethylformamide |
| DMG | Dimethylglycine |
| DMP | Dynamic Multi-Pathing / Data Management Platform |
| DNC | Dilation And Curettage Procedure |
| DNP | Doctor Of Nursing Practice |
| DNR | Do-Not-Resuscitate Order |
| DOB | Date Of Birth |
| DOC | Word Document |
| DOMINO | |
| DPO | Data Protection Officer / Days Payable Outstanding |
| DPT | Diphtheria-Pertussis-Tetanus |
| DR | Doctor / Doctor Of Medicine |
| DRO | District Revenue Officer |
| DSP | Deputy Superintendent Of Police |
| DST | Department Of Science & Technology |
| DTCC | Depository Trust & Clearing Corporation |
| DTT | Digital Terrestrial Television |
| DUI | Driving Under The Influence |
| DUO | Do Unto Others |
| DVL | Department Of Dermatology Venereology And Leprosy |
| DVT | Deep Vein Thrombosis |