BNN

BNN may refer to:
 * National Anti-Narcotics Agency (Indonesia) (Badan Narkotika Nasional), a national anti-narcotics agency in Indonesia
 * Banana News Network, a comedy TV Show
 * Baltic News Network, a business news portal
 * BNN (Dutch broadcaster), a radio and television broadcasting organization in the Netherlands
 * Bayesian neural network, a kind of artificial neural network
 * Binary neural network, a kind of artificial neural network
 * Boston Neighborhood Network
 * BNN Bloomberg (formerly Business News Network), a Canadian financial news channel
 * BNN Breaking, a news company headquartered in Hong Kong founded by entrepreneur Gurbaksh Chahal in 2022
 * Brønnøysund Airport (by IATA code)
 * The radio navigation station upon which the Bovingdon stack (a section of airspace near London) is located