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For the Wikipedia G4 criterion for speedy deletion, see Wikipedia:Criteria for speedy deletion#G4.

G4 or G.IV may refer to:



  • PowerPC G4, a type of microprocessor by Freescale used by Apple
    • Power Mac G4, a series of personal computers made by Apple Inc in July 1999.
    • PowerBook G4, a series of Professional notebooks made by Apple Inc in 2001.
    • iMac G4, a series of personal computer made by Apple Inc in January 2002.
    • Xserve G4, a server made by Apple Inc in May 2002.
    • iBook G4, a series of consumer notebooks in October 2003.
    • Mac mini G4, a series of ultracompact computer in January 2005.
  • Group 4 compression, a type of image compression used in fax machines and some image file formats


  • G4 (TV channel), an American television channel.
  • G4 Canada, a Canadian television channel devoted to technology-related programming
  • G4 (band), a British opera boyband



Other uses[edit]

  • VIP Protection Unit, a unit of the Hong Kong Police Force
  • G4, a type of bipin lamp socket
  • USS G4 (SS-26), a 1914 G-class submarine of the United States Navy
  • G4 nations, group formed by Brazil, Germany, India, and Japan to become permanent members of the United Nations Security Council
  • EU four, a group of powerful countries in the European Union

See also[edit]