- Data center
- Data lifecycle management (DLCM)
- Data mining
- Deep learning
- Deep Packet Inspection
- Defect-review SEM
- Demandchain management
>> See: " Supplychain management/Demandchain management " - Demand response
- Diagnostic ultrasound equipment
- Digital content
- Digital signature
- Digital watermark
- Digital TV
- Disaster recovery
- Dispersed power source
- DLNA
- DRM
- Dynamic range
