PCI may refer to: Business and economics Payment card industry, businesses associated with debit, credit, and other payment cards Payment Card Industry Data Security Standard, a set of security requirements for credit card processors Provincial Competitiveness Index, a governance index of Vietnamese provinces Ceridian-UCLA Pulse of Commerce Index, a U.S. economic indicator based on trucking fuel consumption Per capita income Equitable PCI Bank, a Philippine bank Science and technology Panel call indicator, telephone signalling system Pavement condition index, used in transportation civil engineering Picocurie (pCi), a unit of radioactivity Peripheral Component Interconnect, a computer bus PCI-X (PCI eXtended), a computer bus PCI Express (PCIe), a computer bus Projects of Common Interest, a category of EU projects for interconnecting energy infrastructures Protocol-control information, in telecommunication Pulverized coal injection method, in blast furnaces Medicine Percutaneous coronary intervention, a set of procedures used to treat coronary heart disease Photochemical internalization, a light-triggered drug delivery method Potato carboxypeptidase inhibitor, a natural peptide usable for thrombolytic and cancer therapy Prophylactic cranial irradiation, a management option for certain types of aggressive cancers Protein C inhibitor, a serine protease inhibitor Organizations Paralympic Committee of India, which selects athletes to represent India at international athletic meets Parti Communiste Internationaliste, a French political party Partito Comunista Italiano, a former Italian communist party Peer Community in, communities of researchers reviewing and recommending preprints in their field Pentecostal Collegiate Institute (New York), 1900–1903, US Pentecostal Collegiate Institute (Rhode Island), 1902–1918, US Pharmacy Council of India, a statutory body in India Porter and Chester Institute, a technical school in Connecticut and Massachusetts, US Post Carbon Institute, an organization advocating a more resilient, equitable, and sustainable world Presbyterian Church in Ireland, a Protestant denomination in Ireland Project Concern International, a humanitarian organization Public Communications Inc., a Chicago-based national public relations agency Other uses Duruwa language (ISO 639-3 code) See also PPCI (disambiguation)