Other
- Central Bank of Nigeria, established by the CBN Act of 1958 and commenced operations on July 1, 1959
- Canadian Bank Note Company, a Canadian company that designs various identification systems
- CBN is an acronym for Chemical, Biological, and Nuclear warfare (though currently, CBRN is more commonly used.)
- Cannabinol, a psychoactive cannabinoid from the Cannabis plant
- Cubic boron nitride, a binary chemical compound, consisting of equal proportions of boron and nitrogen
- Chandra Babu Naidu, Politician and 9 years Chief Minister of Andhra Pradesh
- Cape Breton North and Victoria
- Care Bears Nighty-Night
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