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ATK may refer to:


  • Alliant Techsystems, an American aerospace, defense, and sporting goods company, now part of Orbital ATK
  • ATK motorcycles, an off-road motorcycle manufacturer
  • A.T. Kearney, a management consulting firm
  • ATK Thiokol, or ATK Launch Systems Group, former names of Thiokol, an aerospace, defense and commercial products company, now part of Orbital ATK
  • ATK (football club), Indian football club formerly known as Atlético de Kolkata


Other uses[edit]

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