NB, Nb, or nb may refer to:
Arts and entertainment N.B. (album), an album by Natasha Bedingfield NB (TV programme), a Scottish arts television programme that aired 1989–1997
Business NB Global Monthly Income Fund, a British investment company National bank (disambiguation) several banks
Language Nota bene, often abbreviated as NB or n.b., a Latin phrase meaning "note well" nb, ISO 639-1 code for Bokmål, the written standard of the Norwegian language 牛屄 (niúbī), a common word in Mandarin Chinese profanity
Places New Brunswick, a province of Canada, (postal abbreviation: NB) Nebraska, US, (former postal abbreviation: NB; changed to NE)
Science and technology Niobium, symbol Nb, a chemical element Naive Bayes classifier, in statistics Neuroblastoma, a type of cancer Nominal bore or nominal pipe size, a set of standard sizes for pipes Nanobarn (nb), a unit of cross-sectional area NB (programming language), an intermediate-stage language known as "New B" that evolved from the "B" language and then further evolved into the "C" language Switch marking for a radio's Noise blanker, which reduces impulse noise
Transportation Niesenbahn, a funicular railway in Switzerland Sterling Airlines, a defunct Danish airline (IATA designator) NB class, Australian steam locomotives Boeing NB, a 1923 training aircraft Mazda MX-5 (NB), the second generation of the Mazda MX-5 Narrowboat ship prefix
Other uses National Battlefield, a protected area in the United States No-ball in cricket Non-binary, a term used by people who identify as neither male nor female New Balance, a shoe company Nigerian Breweries, a beverage company National Bolshevism, a syncretic political movement
See also