OPC may refer to:

  • OLE for process control
    • OPC Foundation, a related consortium
  • Open Packaging Conventions
  • Operations Planning and Control, renamed to IBM Tivoli Workload Scheduler (TWS)
  • Optimized Power Control, a method to adjust laser power when writing optical media.
  • Object Linking and Embedding for Process Control (OPC), in MPDV
Architecture and engineering
  • Optical proximity correction
  • Optimized Power Control (or Optimum Power Calibration), a function of a CD or DVD writer
  • Ordinary Portland cement
  • Organic Photoconductor, an element used for, among other applications, photocopier drums.
Natural sciences
  • Ocean Prediction Center
  • Oligomeric proanthocyanidin
Social matters, politics and government
  • Office of Policy Coordination, a secret U.S. government unit, 1948-1951
  • Office of the Privacy Commissioner of Canada
  • Overseas Press Club
  • Oodua Peoples Congress, militant Yoruba nationalist organization situated in Nigeria
  • (Federal) Office for the Protection of the Constitution, a translation of the German name Bundesamt für Verfassungsschutz
  • Orthodox Presbyterian Church
  • Online Party of Canada
  • Ontario Police College
  • Ontario Pioneer Camp, in Huntsville, Ontario, Canada
  • Orthotic Prosthetic Center
  • O-Pee-Chee, a Canadian sports card company
  • OPC, Opel Performance Center a subsidiary of car manufacturer Opel