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OG, O.G., or Og may refer to:

Arts and entertainment[edit]


Science and technology[edit]

  • og, a namespace identifier typically tied in web pages to the Facebook Open Graph protocol
  • Objective glass in optics, especially refractive telescopes, the objective lens
  • Obstetrics and gynaecology, the two medical specialties dealing with the female reproductive organs
  • Orange G, a counterstain used in the Pap stain
  • Original gravity, used in calculating the alcohol content of a drink
  • Og, Oganesson, chemical element 118 in the periodic table, named after Russian scientist Yuri Oganessian


Other uses[edit]

See also[edit]