PEC
- Brasilian
- PEC (cable system)
- PEC Zwolle
- PEK (disambiguation)
- PEQ (disambiguation)
- Pakistan Engineering Council
- Pec (disambiguation)
- Peck (disambiguation)
- Pedernales Electric Cooperative
- Pek (disambiguation)
- Pelican Seaplane Base
- Peque (disambiguation)
- Perfect electric conductor
- Peripheral Event Controller
- Perivascular epithelioid cell
- Plain English Campaign
- Planetary Exploration of China
- Pokhara Engineering College
- Pondicherry Engineering College
- President's Export Council
- Priesthood Executive Committee
- Private Equity Council
- Punjab Engineering College
- Punjab Examination Commission
- Puntland Electoral Commission
- System Management Bus
- Zwolle