PCI
- Ceridian-UCLA Pulse of Commerce Index
- Duruwa language
- Equitable PCI Bank
- PCI Express
- PCI-X
- PPCI (disambiguation)
- Panel call indicator
- Paralympic Committee of India
- Parti Communiste Internationaliste
- Partito Comunista Italiano
- Pavement condition index
- Payment Card Industry Data Security Standard
- Payment card industry
- Peer Community in
- Pentecostal Collegiate Institute (New York)
- Pentecostal Collegiate Institute (Rhode Island)
- Per capita income
- Percutaneous coronary intervention
- Peripheral Component Interconnect
- Perturbational Complexity Index
- Pharmacy Council of India
- Photochemical internalization
- Picocurie
- Porter and Chester Institute
- Post Carbon Institute
- Potato carboxypeptidase inhibitor
- Presbyterian Church in Ireland
- Project Concern International
- Projects of Common Interest
- Prophylactic cranial irradiation
- Protein C inhibitor
- Protocol-control information
- Provincial Competitiveness Index
- Public Communications Inc.
- Pulverized coal injection method