BK or Bk may refer to: Businesses and organizations Burger King, a chain of fast food restaurants The Bank of New York Mellon, the New York Stock Exchange symbol for The Bank of New York Mellon Corporation (NYSE:BK) Brahma Kumaris, a religious movement British Knights, a manufacturer of athletic shoes Federal Criminal Police Office (Austria) (Bundeskriminalamt), a federal police force Okay Airways (IATA airline code BK) Science and technology BK channel, an ion channel characterized by its large conductance of potassium ions through cell membranes BK virus, a member of the polyomavirus family Berkelium (Bk), a chemical element Elektronika BK, a series of 16-bit PDP-11-compatible Soviet home computers developed by NPO Scientific Center Bordkanone, an aircraft cannon Brother's Keeper (software), a genealogy software program TU Delft Faculty of Architecture (Dutch: Faculteit Bouwkunde) Bradykinin, a peptide targeted by ACE inhibitors Other uses B.K. Cannon, (born 1990), actress from Hawaii, USA BK (musician), (born 1973), the working name of the English hard house producer Ben Keen BK Racing, a former NASCAR team Bankruptcy, a legal status of a person or other entity that cannot repay debts Bosnia and Herzegovina (FIPS 10-4 country code BK) Brooklyn, a borough of New York City