| Abbreviation | Definition |
|---|---|
| PAANO | Pilipinx Americans Aiding in Networking Opportunities |
| PAC | Port Authorization Code |
| PAC | Presentation Abstraction Control |
| PAC | Proxy Auto Configuration |
| PAC | Public Access Catalog |
| PACA | Priority Access And Channel Assignment |
| PACP | Port Access Control Protocol |
| PACS | Protection Availability Continuity Scalability |
| PAD | Packet Assembler Disassembler |
| PAD | Personal Access Device |
| PADS | Protected Archives Distribution System |
| PAE | Port Access Entity |
| PAGP | Port Aggregation Protocol |
| PALM | Parallel Array of Linux Machines |
| PAM | Port Adapter Module |
| PAM | Port Address Mapping |
| PAM | Port to Application Mapping |
| PAM | Portable Authentication Module |
| PAM | Pulse Amplitude Modulation |
| PAM5 | Five-level Pulse Amplitude Modulation |