- Cross-Selling
- CRS
- CSF
- CSI
- CSS
- CTO
- Cubicles
- Current assets
- Customer
- Customer care management
- Customer Interaction Center
- Customer satisfaction
- Customer satisfaction survey
- Customizing
- Cut corners
- Cutting Edge
- CV
- CVC
- CVO
- Cybercommuting
- Cyberfraud
- Cyberprise
- Cyberspace
- Cyberterrorismus
- Cyberwar
- Cybrarian
- D-Commerce
- DA
- DAF
- DAFÜ
- Daily Sales Outstanding
- Data Cleaning Services
- Data Mining
- Data Room
- Data Shadow
- Data sheet
- Data Warehouse-System
- Database Marketing
- Datenfasten
- DAU
- Dauer
- Day off
- Daytrading
- DCG
- DDP
- DDU
- Dead Cat Bounce
- Dead mind body
- Dead Tree Edition
- Dead wood
- Deadcom
- Deal Flow
- Debriefing
- Debtors and other assets
- Debuggen
- Decay-Effekt
- Dehire
- Delayer
- Delegation
- Demographischer Wandel
