PCN

• Pennsylvania Cable Network, non-profit cable television network of Pennsylvania, US
• Personal Computer News, a defunct computer magazine
• PCN (band), a Mexican metal band

• Partido de Conciliación Nacional, former name of the National Coalition political party in El Salvador
• Partidul Comuniştilor (Nepecerişti), the Communist Party in Romania

• Process control network, a communications network that transmits instructions and data between control and measurement units and SCADA equipment
• Penicillin (PCN)

• Pavement classification number, a code classifying types of surface at airports
• Polychlorinated naphthalene, an organic pollutant
• Potato cyst nematode, an agricultural pest
• Program Composition Notation, a language for parallel programming
• Polycycnis (Pcn), a genus of orchid
• Personal communications network, mobile telephone system, Europe

• Pecked curvilinear nucleated, in archaeology, a form of prehistoric rock carving
• Penalty Charge Notice, a Fixed Penalty Notice issued by parking attendants and other civil enforcement officers
• Pitcairn Islands, ISO-3166-1 alpha-3 code
• Putnam City North High School
• Post Christum natum (modern Latin: p.C.n., "After the Birth of Christ")
• Personnel Certification in Non-Destructive Testing, maintained by the BINDT in the UK
• Product change notification, document issued by a manufacturers to inform customers about a product change
• Paisley Canal railway station (Station code), Paisley, Scotland

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