IPO (disambiguation)

IPO may refer to:

• Initial public offering of a corporations' shares to the public
• Intellectual Property Office (disambiguation), a government agency in many nations
• Intellectual Property Owners Association
• International Philosophy Olympiad
• International Progress Organization, an organization dealing with world affairs, based in Vienna
• Instituto Português de Oncologia, in Portugal
• IPO (station), a metro station at the University of Porto, Portugal
• Israel Philharmonic Orchestra
• IPO Model (Input, Processing, Output), a conceptual model of computer systems
• Interprocedural optimization, a method of optimizing computer programs
• Instrumentum Pacis Osnabrugensis (Treaty of Osnabrück), one of the two treaties of the Peace of Westphalia
• Impersonating a police officer