| Acronym | Definition |
|---|
| PCI | Peripheral Component Interconnect (personal computer bus) |
| PCI | Payment Card Industry (MasterCard data security standard) |
| PCI | Percutaneous Coronary Intervention |
| PCI | Picocuries |
| PCI | Prestressed Concrete Institute |
| PCI | Planex Communications Inc |
| PCI | Partito Comunista Italiano (Italian Communist Party) |
| PCI | Precast/Prestressed Concrete Institute (Chicago, Illinois) |
| PCI | Property Casualty Insurers |
| PCI | Per Capita Income |
| PCI | Peripheral Component Interface (less common) |
| PCI | Pharmacy Council of India |
| PCI | Project Concern International |
| PCI | Protocol Control Information |
| PCI | Prophylactic Cranial Irradiation |
| PCI | Pavement Condition Index |
| PCI | Periodical Contents Index |
| PCI | Pulverized Coal Injection |
| PCI | Panhellenic Conference on Informatics |
| PCI | Professional Certified Investigator (American Society for Industrial Security) |
| PCI | Population Communications International |
| PCI | Parent Coaching Institute (Bellevue, WA) |
| PCI | Personal Computer Interface |
| PCI | Pacific Consultants International |
| PCI | Per Column Inch (classified ads) |
| PCI | Powder Coating Institute |
| PCI | Press Council of India |
| PCI | Presbyterian Church in Ireland |
| PCI | Photochemical Internalization (drug delivery technology) |
| PCI | Process Capability Index |
| PCI | Professional Careers Institute |
| PCI | Pre-Combat Inspections |
| PCI | Price Cap Index |
| PCI | Power Control Interface (IBM) |
| PCI | Programmable Communications Interface |
| PCI | Power Costs, Inc. (Norman, OK) |
| PCI | Professional Consultants, Inc. |
| PCI | Planning Consultants, Inc. |
| PCI | Pellet-Clad Interaction |
| PCI | Private Corrections Institute (Tallahassee, FL) |
| PCI | Personal Credit Index |
| PCI | Pellet Cladding Interaction |
| PCI | Panel Call Indicator |
| PCI | Pest Control India Pvt. Ltd. (est. 1954) |
| PCI | Paramore Consulting, Inc. |
| PCI | Pressure Composition Isotherms (hydrogen storage materials research) |
| PCI | Presentation Context Identifier |
| PCI | Process Control Instrument |
| PCI | Personal Communications Interface |
| PCI | Protocol Capability Indicator |
| PCI | Program-Controlled Interrupt |
| PCI | Physico-Chimie Informatique |
| PCI | Palliative Care Initiative (healthcare) |
| PCI | Programmed Composites Inc. |
| PCI | Power Contractors, Inc. |
| PCI | Price Consumer Index |
| PCI | Pavement Consultants Inc. |
| PCI | Principal Components Inverse |
| PCI | Personal Computer Integration |
| PCI | Protocol Control Indicator (ITU-T) |
| PCI | Physical Crisis Intervention |
| PCI | Performance Consultants, Inc. |
| PCI | Protech Communications Inc. |
| PCI | Pharmaceutical Council of India |
| PCI | Pilots for Christ International, Inc. |
| PCI | Personal Communications Internetworking (Bellcore) |
| PCI | Party Concepts, Inc. |
| PCI | Product Configuration Identification/Item |
| PCI | Perfect Computing Inc (Boise, Idaho) |
| PCI | Paramount Construction, Inc. (Delavan, WI) |
| PCI | Painting and Coatings Industry |
| PCI | Personal Contact Item (Canada Post) |
| PCI | Property Condition Index (Australia) |
| PCI | Pellet-Cladding Interface (nuclear industry) |
| PCI | Physical Configuration Identification |
| PCI | Periodic Conformance Inspection |
| PCI | Prime Computer Incorporated |
| PCI | Photo Thermal Common Path Interferometer |
| PCI | Plasma Cell Infiltration |
| PCI | Procurement Control Identifier |
| PCI | Power Cutting Incorporated |
| PCI | Powertrain Control Interface |
| PCI | Professional Computer Integration |
| PCI | Proof of Concept Initiative |
| PCI | Phase Compensation Instability |
| PCI | Powdered Coal Injection (metallurgy industry) |
| PCI | Pulse Current Injection |
| PCI | Production Control Interface |
| PCI | Premisys Communication Inc. |
| PCI | Physical Configuration Item |
| PCI | Police and Criminal Investigation (UK) |
| PCI | Perturbative Configuration Interaction |
| PCI | Post-Cruise Inspection (NAVAIR) |
| PCI | Passenger Convenience Items (air travel) |
| PCI | Plastic Card Industries |
| PCI | Phone Centre Interface |
| PCI | Plymouth Cordage Industries, Inc. (Plymouth, MA) |