GB or Gb may refer to:
Gbcast (also known as group broadcast) is a reliable multicast protocol that provides ordered, fault-tolerant (all-or-none) message delivery in a group of receivers within a network of machines that experience crash failure.
The GBU-39 Small Diameter Bomb (SDB) is a 250 lb (110 kg) precision-guided glide bomb that is intended to provide aircraft with the ability to carry a higher number of more accurate bombs.
GB 18030 is a Chinese government standard, described as Information technology — Chinese coded character set and defines the required language and character support necessary for software in China.
Gbenga Akinnagbe BENG-gə ə-KEEN-ə-bay (born December 12, 1978) is an American actor and writer, best known for his role as Chris Partlow on the HBO series The Wire.
Omogbolahan Gregory "Gboly" Ariyibi (born January 18, 1995) is an American professional soccer player who plays as a midfielder for Championship club Nottingham Forest.
"GBI (German Bold Italic)" is a 1998 song by Japanese American music producer Towa Tei, featuring vocals from Australian singer Kylie Minogue, Japanese musician Haruomi Hosono, and co-written by Tei and Minogue.