| PCI(S) | Percutaneous Cardiac Intervention(S) 
| Others |
| PCIS | Canton Island Airport, Canton Island, Kiribati
| Others |
| PCIS | Pacific Climate Information System
| Others |
| PCIS | Palliative Care Information Service
| Others |
| PCIS | Panther Creek Information Services
| Others |
| PCIS | Partnership for Critical Infrastructure Security
| Others |
| PCIS | Patient Care Information System
| Others |
| PCIS | Person Centered Information System
| Others |
| PCIS | Phenix City Intermediate School
| Others |
| PCIS | Plymouth Community Intermediate School
| Others |
| PCIS | Portable Common Interface Set
| Others |
| PCIS | Post-Cardiac Injury Syndrome
| Others |
| PCIS | Power, Controls and Information Systems
| Others |
| PCIS | Process Capability Information System
| Others |
| PCIS | Professionals For Computers And Integrated Systems
| Others |