| Abbreviation | Definition |
|---|---|
| PCN | Polling Card Number |
| PCN | Process Control Network |
| PCNC | Parent Community Networking Coordinator |
| PCO | Protocol Configuration Options |
| PCP | Port Control Protocol |
| PCP | Priority Ceiling Protocol |
| PCR | Preventive Cyclic Retransmission |
| PCT | Private Communication Technology Protocol |
| PCTP | Private Communication Technology Protocol |
| PD | Prefix Delegation |
| PDA | Protocol Decode Architecture |
| PDC | Plugin Delay Compensation |
| PDC | Pointer To Device Context |
| PDC | Printer Driver Communication |
| PDC | Programme Delivery Control |
| PDCD | Portable Data Collection Device |
| PDCP | Packet Data Convergence Protocol |
| PDI | Packet Data Item |
| PDLM | Protocol Description Language Module |
| PDM | Protocol - Dependent Module |