OPC

OPC may refer to:

Architecture and engineering

• Optical proximity correction
• Ordinary Portland cement
• Organic Photoconductor, an element used for, among other applications, photocopier drums.

Computing

• Open Packaging Conventions, a container-file technology created by Microsoft to store a combination of XML and non-XML files
• Open Platform Communications (OPC), in MPDV
  • OPC Foundation, a related consortium
• Operations Planning and Control, renamed to IBM Tivoli Workload Scheduler (TWS)
• Optimized Power Control, a method to adjust laser power when writing optical media.
• Organic Photo Conductor, a drum in a laser printer.
• Other Peoples' Computers - reference to privacy issues of cloud data being on somebody else's computer rather than your own and potential security issues.

Natural sciences

• Ocean Prediction Center
• Oligodendrocyte precursor cell
• Oligomeric proanthocyanidin

Social matters, politics and government

• (Federal) Office for the Protection of the Constitution, a translation of the German name Bundesamt für Verfassungsschutz
• Office of Policy Coordination, a secret U.S. government unit, 1948-1951
• Office of the Privacy Commissioner of Canada
• Online Party of Canada
• Oodua Peoples Congress, militant Yoruba nationalist organization situated in Nigeria
• Orthodox Presbyterian Church
• Overseas Press Club

Other

• O-Pee-Chee, a Canadian sports card company
• Onnuri Presbyterian Church, a South Korean megachurch
• Ontario Pioneer Camp, in Huntsville, Ontario, Canada
• Ontario Police College
• OPC, Opel Performance Center a division of car manufacturer Opel
• Organisation pour la Prévention de la Cécité, or Organisation for the Prevention of Blindness, a blindness charity working in Africa
• Orthotic Prosthetic Center