CGI may mean:

• CGI Group Inc., a Canadian information management company (formerly Conseillers en Gestion et Informatique C.G.I. Inc.).
• Computer-generated imagery, a movie-making technology.
• Common Gateway Interface, a technology used in web servers.
  • CGI.pm, a Perl module used for dealing with it.
• Computer graphics interface, a low-level interface between the Graphical Kernel System and the hardware.
• Clinical Global Impression, a scale to assess treatment response associated with mental disorders.
• Corrugated galvanised iron, moulded sheet-metal.
• Consultative Group on Indonesia
• Cape Girardeau Regional Airport (IATA airport code: CGI) in Cape Girardeau, Missouri, United States.
• Cuerpo Guardia de Infantería, an Argentine police riot control service.

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