gives the Wolfram UUID of a currently logged-in user, or the user who owns a cloud object containing the code used for the current evaluation.


  • Since every cloud object must have an owner, there is always a definite value for $WolframUUID for any evaluation occurring in the cloud.
  • $WolframUUID may differ from $RequesterWolframUUID.
  • For a desktop system not authenticated against the cloud, $WolframUUID is None.
  • A Wolfram UUID is a unique permanent identifier associated with a user.
Introduced in 2014
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