BNK

BNK may refer to:

• BNK Petroleum, a California-based oil company spun off in 2008 from Bankers Petroleum
• Bankers Petroleum (Toronto Stock Exchange symbol), a Canadian oil company
• Ballina Byron Gateway Airport (IATA code), a small regional airport in Ballina, New South Wales, Australia
• The Kurdish Digital Library, (French: La bibliothèque numérique kurde (BNK))
• BNK, a Russian aviation acronym for Byuro Novykh Konstruktsiy (Bureau of New Construction)
• BNK, (Ru:Военно-промышленная компания, Voyenno-promyshlennaya kompaniya) Military Industrial Company
• BNK, a computer file format
• "B.N.K.", a song by Eazy-E and Bone Thugs-n-Harmony from The Collection
• B-NK (Progenitor for B and NK), a term related to lymphopoiesis
• BNK, Busan Bank
• BNK48, an idol group based in Bangkok, Thailand