| CRM | Customer Relationship Management |
| ERM | Employee Relationship Management |
| BRM | Bewerber Relationship Management [dt.-engl.] |
| CNM | Customer Network Management |
| CCM | Customer Conquest Management [engl.] Weiterentwicklung von Customer Related Management |
| COMMS | Customer Oriented Manaufacturing Management System |
| C2C | Customer to Customer [phonetischer Begriff] [engl.] Internethandel von Kunde zu Kunde |
| ERE | Entity-Relationship Editor |
| ERD | Entity Relationship Diagram |
| ERD | Entity-Relationship Diagram |
| ERA | Entity-Relationship-Attribute |
| AREP | Application Relationship Endpoint Aus Feldbusnorm IEC 61158 |
| ERM | Entity-Relationship-Modeling |
| LDR | Long Distance Relationship |
| ERM | Entity/Enterprise Relationship Model |
| LFER | Linear Free Energy Relationship |
| LSER | Linear Solvation Energy Relationship |
| ARPM | Application Relationship Protocol Machine [engl.] Aus Feldbusnorm IEC 61158 |
| CU | Customer Use |
| CN | Customer Network |
| VIC | Very Important Customer Wichtiger Kunde |
| CID | Customer Identifier |
| FCS | First Customer Shipment |
| CUSP | Customer Programming Language |
| COT | Customer Owned Tooling |
| CPN | Customer Premises Network |
| COAM | Customer Owned And Maintained |
| CGW | Customer/Campus Gateway |
| CAN | Customer Access Network |
| CDB | Customer Distributed Buglist |
| C/S | Customer Service [engl.] |
| CCR | Customer-Controlled Reconfiguration |
| CCU | Customer Control Unit |
| CPO | Customer Premises Equipment |
| CRC | Customer Record Center |
| CSN | Customer Service Number |
| CSE | Customer Suppoirt Engineer |
| CSD | Customer Service Division |
| CSA | Customer Service Administration |
| BTOC | Business to Customer [engl.] Handel mit dem Kunden mittels Internet |
| CRCF | Customer Return For Credit |
| GCS | Global Customer Services |
| CRD | Customer Required Date |
| CCBO | Customer Care Backoffice [engl.] Stammbüro zur Kundenbetreuung |
| CC&B | Customer Care & Billing [engl.] Dienstleistung beim Betrieb von Datennetzen |
| TACT | Transactional Analysis in Customer Treatment Brauch im Geschäftsverkehr mit Kunden |
| ICAN | Individual Customer Access Network |
| HACD | Home Area Customer Dialing |
| ICSA | International Customer Service Association |
| NCSA | National Customer Service Association |