| PECS | Patient Electronic Care System 
| Others |
| PECS | Per Estate Charging System
| Others |
| PECS | Personalized Exploration for College Success
| Others |
| PECS | Physics of Estuaries and Coastal Seas
| Others |
| PECS | Picture Exchange Communication System
| Others |
| PECS | Picture Exchange Communication Systems
| Others |
| PECS | Picture Exchange Communications System
| Others |
| PECS | Plan for European Cooperating States
| Others |
| PECS | Power Electronics Cooling System
| Others |
| PECS | Power Elevator Control System
| Others |
| PECS | Power Engagement Clutch System
| Others |
| PECS | Prasads Engineering and Computing Solutions
| Others |
| PECS | Princeton Energy and Climate Scholars
| Others |
| PECS | Producer extends and Consumer super
| Others |
| PECS | Producer Extends Consumer Super
| Others |
| PECS | Programme on Ecosystem Change and Society
| Others |
| PECS | Progress in Energy and Combustion Science
| Others |