OOT or Oot may refer to:

• The Legend of Zelda: Ocarina of Time, an action-adventure game
• Onotoa Airport, the IATA code OOT
• Oot, one of the homogeneous groups divided from Zangskari language
• OOT (Out-of-Taiwan) hypothesis
• Oxidative Onset Temperature/Time approach

This disambiguation page lists articles associated with the title OOT.
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