Black Triangle (other)

Black triangle may refer to one of the following:

* Black triangle (badge), a Nazi concentration camp badge worn by inmates deemed "asocial"
** LGBT symbols#Triangle badges of Nazi Germany, Lesbian or feminist symbol reclaimed from the Nazi use
* Angularis nigra, triangular gap between teeth
* Black triangle (pharmacovigilance), suffixed to the trade name of British medicines when the drug is new on the market
* Black triangle (UFO), a type of UFO
* Black triangle, several code points in Unicode Geometric Shapes

Places

* Black Triangle (region), the nickname for one of Europe's most polluted areas, where Germany, Poland and the Czech Republic meet
* The nickname given to the area south of Montreal worst affected by a long term blackout during the North American ice storm of 1998

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