NBT
NBT may refer to:

Arts and media
 National Black Theatre, New York, U.S.
 National Black Theatre (Australia) (1972–1977), Sydney, Australia
 Nature Biotechnology, a scientific journal
 Navbharat Times, an Indian newspaper
 Never Been Thawed, a 2005 American film
 The Next BIG Thing, a singing talent contest hosted by Radio Disney
 Nothing But Thieves, a British rock band

Organizations
 National Bank of Tajikistan
 National Book Trust, a publishing house under the Indian Ministry of Education
 National Broadcasting Services of Thailand, formerly Radio Thailand and Television of Thailand
 North Bristol NHS Trust, a hospital group in England. Transport
 Norbiton railway station, London, National Rail station code
 Norse Atlantic Airways, ICAO code NBT

Science and technology
 Natural bobtail, an animal's tail which grows short or is missing
 NetBIOS over TCP/IP, a computer network protocol
 Neurophysiological Biomarker Toolbox, a computing toolbox used in biology
 New Breeding Techniques, a genetic engineering technology
 Nitro blue tetrazolium chloride, a chemical compound used in immunology
 Sodium bismuth titanate, a relaxor ferroelectric material