| Abbreviation | Definition |
|---|---|
| PF | Packet Frequency |
| PF | Public Folder |
| PFA | Please File Attached |
| PFC | Policy Feature Card (Cisco) |
| PFC | Progressive Flow Control |
| PFE | Packet Forwarding Engine |
| PFN | Physical Frame Number |
| PFQ | Packet Fair Queueing |
| PFQ | Per- Flow Queuing |
| PFRN | Plainville Family Resource Network |
| PFS | Parallel File System |
| PFS | Protocol Functions Similar |
| PG | Processing Group |
| PGA | Process Global Area |
| PGCN | Power Grid Communication Networking |
| PGM | Pragmatic General Multicast |
| PH | Private Header |
| PHB | Per Hop Behavior |
| PHC | Path Hierarchy Component |
| PHS | Payload Header Suppression |