PES
- 2019 Philadelphia Energy Solutions refinery explosion
- IP Multimedia Subsystem
- PES (director)
- PES University
- PULHHEEMS
- Packetized elementary stream
- Pallasite Eagle Station
- Parotid plexus
- Party of European Socialists
- Passenger Environment Survey
- Payment for ecosystem services
- Pensarn railway station
- Performance-enhancing substance
- Peripheral Event System
- Pes (anatomy)
- Pes (river)
- Pes (rural locality)
- Pes (unit)
- Pes anserine bursitis
- Pes anserinus (leg)
- Pez (disambiguation)
- Photoemission spectroscopy
- Poly(ethylene succinate)
- Polyester
- Polyethersulfone
- Postal Express Service
- Potential energy surface
- Power Engineering Society
- Premier Election Solutions
- Price elasticity of supply
- Pro Evolution Soccer
- Programmed electrical stimulation
- Providence Elementary School
- Pseudoexfoliation syndrome
- Public employment services in the European Union
- Social Encounter Party
- Socialist Equality Party (France)
- Solidarity Encounter Party