- PA (Power Amplifier)
- PABX (Private Automatic Branch Exchange)
- Packet
- Packet radio
- Packet Switched Public Data Network (PSPDN)
- Packet Switching
- PACS (Personal Access Communications System)
- Pad
- PAD (Packet Assembler/Disassembler)
- Pager
- Pager Printer (Receiver)
- Paging
- Paging Message Processor
- PAM (pulse amplitude modulation)
- PAMR (Public Access Mobile Radio)
- Part 68
- Partial response signalling
- Partitioning
- Path Loss
- PBX (Private Bank Exchange)
- PCH Paging Channel
- PCIA (Personal Communications Industry Association)
- PCMCIA (Personal Computer Memory Card International Association)
- PCN (Personal Communications Network)
- PCS (Personal Communications Services)
- PCS (Personal Communications System)
- PCS 1900
- PDC (Personal or Pacific Digital Cellular)
- PDF (Probability Density Function)
- Peak
- Peak power
- Personal Digital Assistant (PDA) atau Personal Communicator
- Personal Mobility
- Personal Number or Universal Number
- Phase jitter
- PHP (Personal Handy Phone)
- PHS Personal Handy Phone System
- Physical channel
- Pilot code
- Pilot pollution
- PIN Code (Personal Identity Number code)
- PLL (Phase Locked Loop)
- PLMN (Public Land Mobile Network)
- PMR (Private Mobile Radio)
- PNCQPSK (Pseudo-Noise Complex Quadrature Phase Shift Keying)
- POCSAG (Post Office Code Special Advisory Group)
- Point-to-Point
- Polarization diversity
- Pole Attachment
- POP (Persons of Population)
- Portable
- Potential site
- POTS (Plain Old Telephone Service)
- Power control
- Power Link Budget
- Power spectral density
- PQA (Palm Query Applications)
- PRBS (Pseudo-Random Binary Sequence)
- Pre-paid Cellular
- Primary GSM (P-GSM)
- Private Carrier
- Private Radio Service
- PRMA (Packet Reservation Multiple Access)
- Processing gain
- Project 25
- Project Angel
- Propagation
- Propagation channel
- Proportional and Owned Subscribers
- Protocol
- PSAP (Public Safety Answering Point)
- PSD (Power Spectral Density)
- PSK (Phase Shift Keying)
- PSTN (Public Switched Telephone Network)
- PSWAC (Public Safety Wireless Advisory Committee)
- PTT
- Public Land Mobile Network (PLMN)
- Public Utilities Commission
- Pulse
- Pulse Amplitude Modulation (PAM)
- Pulse Coded Modulation (PCM)
- Pulse Coded Modulation 30 (PCM30)
- Punctured code
- Push-to-Talk Operation
- PWRS
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