By customer
- Daimler FleetBoard GmbH
- Dassault Aviation
- Datalogix
- DATEV eG
- Dave Beulke and Associates
- Dave Beulke & Associates
- DC Water
- Dedicated Computing LLC
- DekaBank
- Deltamarin
- Delta Natural Gas
- Deluxe Corporation, Galvin Consulting, Baldor Electric, Florida Hospital, Dave Beulke & Associates
- Derby Cycle
- Deutsche Bahn AG
- Deutsche Rentenversicherung Knappschaft-Bahn-See
- Deutscher Ring AG
- DHL Express Germany
- DHL Global Forwarding
- Diagram B.V.
- Dia System
- DigitalGlobe
- Dillard's Department Stores
- DNB ASA
- Dombivli Nagari Sahakari Bank Ltd.
- Doosan Infracore
- Dorel Industries
- Douglas Holding AG
- Dow Benelux
- Dow Jones & Company
- Dr Pepper Snapple Group
- DTE Energy
- Duke University