| IC | Independent Carrier |
| IXC | IntereXchange Carrier [aka LD] |
| OCC | Other Common Carrier |
| INC | International Carrier |
| IEC | Interexchange Carrier |
| OC | Optical Carrier |
| DS | Digital carrier Span |
| DLC | Digital Loop Carrier |
| OC3 | Optical Carrier Level 3 |
| DCT | Digital Carrier Trunk |
| DCM | Digital Carrier Module |
| EC | Exchange Carrier [Telefon] |
| MCM | Multi Carrier Modulation |
| LCC | Leadless Chip Carrier |
| IC | Interexchange Carrier [Telekommunikation] |
| IC | Inter-LATA Carrier |
| LEC | Local Exchange Carrier |
| IEC | Interexchange Carrier [Telekommunikation] |
| SCPC | Single Channel Per Carrier |
| IRC | International Record Carrier |
| DCD | Data Carrier Detect |
| dBC | Decibel below Carrier [engl.] Funkfeldstärken bezogen auf eine Trägerfrequenz |
| CD | Carrier Detect [engl.] Träger-Erkennung auf Übertragungssystemen |
| SCM | Subscriber Carrier Module |
| SCA | Shuttle Carrier Aircraft |
| CCI | Computer Carrier Interrupt |
| CAC | Carrier Access Code |
| TCA | Telecommunications Carrier Association |
| TCP | Tape Carrier Package |
| VLCC | Very Large Crude Carrier |
| CF | Carrier Frequency [engl.] Trägerfrequenz |
| CIR | Carrier-to-Interference Ratio |
| PIC | Primary Independent Carrier |
| RCC | Radio Common Carrier |
| RCM | Remote Carrier Module |
| CSA | Carrier Serving Area |
| SCC | Specialized Common Carrier |
| CIC | Carrier Identification Code |
| CGL | Carrier Grade Linux |
| LEC | Local Exchange Carrier [Telekommunikation] |
| PLCC | Plastic Leadless Chip Carrier |
| SCCS | Specialized Common Carrier Service |
| MACS | Mixed Aloha Carrier Sense |
| LDC | Long Distance Carrier [Telekommunikation] |
| ILEC | Incumbent Local Exchange Carrier |
| CCA | Carrier Controlled Approach [engl.] |
| CCLC | Carrier Common Line Charge |
| CGE | [Linux] Carrier Grade Edition |
| CSMA | Carrier Sense Multiple Access |
| APC | Armoured Personal Carrier [engl.] Schützenpanzerwagen |