BBN
Look up BBN in Wiktionary, the free dictionary.
BBN might refer to:
- Bayesian belief network, a probabilistic graphical model that represents a set of random variables and their conditional independencies via a directed acyclic graph
 - Bible Broadcasting Network, a global Christian radio network headquartered in Charlotte, North Carolina
 - Big Bang nucleosynthesis
 - Big Blue Nation, the fan base of the University of Kentucky athletics programs
 - Big Brother Naija, a Nigerian reality show
 - Biuro Bezpieczeństwa Narodowego, a Polish government agency
 - Brevard Business News
 - Buckingham Browne & Nichols School (BB&N), a private school in Cambridge, Massachusetts
 - 9-Borabicyclo(3.3.1)nonane (9-BBN), a reagent used in organic chemistry
 - The 3-letter code for Blackburn railway station in the UK
 - Blackburn railway station, Melbourne
 - Bengbu South railway station, China Railway pinyin code BBN
 - Raytheon BBN Technologies, formerly Bolt, Beranek and Newman, a technology company in Cambridge, Massachusetts
 - BBN Music, American music cooperation
 - Beyond National Jurisdiction (BBN), United Nations Convention on the Law of the Sea