2B

, 2B or 2-B may refer to: 2B (band), a Portuguese band 2B (rapper), rapper Collin Brown 2B (film), a 2009 science fiction film 2B lead, a grading of pencil hardness Aerocondor, IATA airline code 2B Alpha-2B adrenergic receptor, a type of protein structure Haute-Corse, French department 2B (northern Corsica) Second baseman, a fielding position in baseballDouble (baseball), a type of base hit Stalag II-B, a prisoner of war camp in Germany Transcription factor II B, a type of protein structure Type IIb diamond, a classification of natural diamonds Type IIB string theory, a physical theory about the basic substance of the universe II-b or IIb, a subtype of Type II supernova 2B, the main protagonist from Nier: Automata