DDX may refer to:

  • , a common notation for the differential operator with respect to a variable x
  • DD(X), former program name of a class of U.S. Navy destroyers
  • Differential diagnosis (DDx or D/Dx), a systematic method used to identify unknowns
  • Device Dependent X, graphics device drivers supporting 2D acceleration in the X.Org Server
  • DDX (chemistry), a collective name for DDT and its breakdown products DDE and DDD

See also

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