2B

2B or 2-B may refer to:

Science

• IARC group 2B
• Type IIB string theory, a physical theory about the basic substance of the universe
• II-b or IIb, a subtype of Type II supernova
• Transcription factor II B, a type of protein structure
• Type IIb diamond, a classification of natural diamonds
• Alpha-2B adrenergic receptor, a type of protein structure

Sports and entertainment

• 2B (band), a Portuguese band
• 2B (film), a 2009 science fiction film
• , one of the protagonists of the 2017 video game Nier: Automata
• 2b Theatre Company, a theatre company in Halifax, Nova Scotia
• 2b2t, а Minecraft server with no rules
• Second baseman, a fielding position in baseball
• Double (baseball), a type of base hit

Other uses

• 2B lead, a grading of pencil hardness
• Aerocondor, IATA airline code 2B
• Haute-Corse, French department 2B (northern Corsica)
• Stalag II-B, a prisoner of war camp in Germany

See also

• B2 (disambiguation)
• IIB (disambiguation)