Marques
- Dahle
- Dahua Technology
- Da-Lite
- Danfoss
- Dataflex
- DataLocker
- Datalogic
- Datamax O'Neil
- Dataminr
- Dataproducts
- DATARAM
- Dawicontrol
- DC
- DCS
- De’Longhi
- DEB
- Decadry
- Decoded
- DeepCool
- DEFA
- Deflecto
- DELINEA
- Delkin Devices
- DELL
- Dell Wyse
- Delock
- Delphis Eco
- DELTA
- Deltaco
- Detectamet
- Dettol
- Develop