2B or 2-B may refer to: * 2B (band), a Portuguese band * ''2B'' (film), a 2009 science fiction film * 2B lead, a grading of pencil hardness * 2B (''Nier: Automata''), the video game's main protagonist * 2b Theatre Company, a theatre company in Halifax, Nova Scotia * 2b2t, а ''Minecraft'' server with no rules *

Aerocondor Aerocondor (ATA Aerocondor Transportes Aéreos Lda.) was one of the first private capital Portuguese airlines certified by the ''Instituto Nacional de Aviação Civil (INAC)'' (''National Institute for Civil Aviation'') to transport passengers, a ...

, IATA airline code 2B *

Alpha-2B adrenergic receptor The alpha-2B adrenergic receptor (α2B adrenoceptor), is a G-protein coupled receptor. It is a subtype of the adrenergic receptor family. The human gene encoding this receptor has the symbol ADRA2B. ADRA2B orthologs have been identified in severa ...

, a type of protein structure *

Haute-Corse Haute-Corse (; co, Corsica suprana , or ; en, Upper Corsica) is (as of 2022) an administrative department of France, consisting of the northern part of the island of Corsica. The corresponding departmental territorial collectivity merged wi ...

, French department 2B (northern Corsica) * Second baseman, a fielding position in baseball *

Double (baseball) In baseball, a double is the act of a batter striking the pitched ball and safely reaching second base without being called out by the umpire, without the benefit of a fielder's misplay (see error) or another runner being put out on a fielder ...

, a type of base hit *

Stalag II-B Stalag II-B was a German World War II prisoner-of-war camp situated west of the town of Hammerstein, Pomerania (now Czarne, Pomeranian Voivodeship, Poland) on the north side of the railway line. It housed Polish, French, Belgian, Serbian, Dutch ...

, a prisoner of war camp in Germany *

Transcription factor II B Transcription factor II B (TFIIB) is a general transcription factor that is involved in the formation of the RNA polymerase II preinitiation complex (PIC) and aids in stimulating transcription initiation. TFIIB is localised to the nucleus and pro ...

, a type of protein structure * Type IIb diamond, a classification of natural diamonds *

Type IIB string theory In theoretical physics, type II string theory is a unified term that includes both type IIA strings and type IIB strings theories. Type II string theory accounts for two of the five consistent superstring theories in ten dimensions. Both theories ...

, a physical theory about the basic substance of the universe * II-b or IIb, a subtype of

Type II supernova A Type II supernova (plural: ''supernovae'' or ''supernovas'') results from the rapid collapse and violent explosion of a massive star. A star must have at least 8 times, but no more than 40 to 50 times, the mass of the Sun () to undergo this ...

See also