IPO can refer to:

• In finance, Initial public offering
• In intellectual property (patents, trademarks, copyrights):
  • the Intellectual Property Owners Association
  • an organization and public office referred to as intellectual property office
• In medicine, the Instituto Português de Oncologia (Portuguese Oncology Institute), located in Lisbon, Porto and Coimbra
• In transport, IPO (station) at the University of Porto
• In music, Israel Philharmonic Orchestra, based in Tel Aviv and led by Zubin Mehta
• In information technology, the IPO Model is a conceptual model of a general system
• In computer graphics, Interpolation or Interpolation curve (IPO curve)
• In computer science, Interprocedural optimization, a compile time whole-program optimization method.
• In institutions, Indigenous Peoples' Organisation
• In sports Internationale PrüfungsOrdnung, which is Schutzhund according to international rules.

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