Black cube

Black cube may refer to:

  • Black Cube, a private intelligence agency
  • Black Cube Nomadic Art Museum, a nonprofit contemporary art organization producing site-specific art in the public realm.
  • Blackballing, a vote of rejection in a secret ballot
  • The Kaaba, a black cubical building at the center of the Grand Mosque of Mecca; it is the most sacred site in Islam
  • Tefillin, a small black leather cube used by Jews during prayer