What is B9?
{{TOC right}} '''B9''', '''B-9''' or '''B IX''' can be: {{TOC right}} ==Science== * [[Prodelphinidin B9]], a plant phenolic compound * [[Vitamin B9|Vitamin B<sub>9</sub>]], another name for [[folic acid]] * B-Nine WSG, a formulation of the plant growth regulator [[daminozide]] * [[Boron-9]] (B-9 or <sup>9</sup>B), an isotope of boron * A subclass of B-[[stellar classification|class stars]] ==Organizations== * [[Bucharest Nine]] (B9), a group of nine NATO members: Bulgaria, the Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Romania and Slovakia * The abbreviation used for the record label [[Bridge Nine]] ==Transport== * [[B9 (Croatia)]], a road part of the Istrian Y highway complex * [[B9 (New York City bus)]] serving Brooklyn * [[Bundesstraße 9]], a federal highway in Germany * [[Iran Airtour]] (IATA code B9) *[[Air Bangladesh]] (former IATA code B9) ==Vehicles== * [[Bavarian B IX]], an 1874 German steam locomotive model * [[Bavarian B IX (Ostbahn)]], an 1869 German steam locomotive model * [[Bensen B-9]], a 1958 American small helicopter * [[Boeing B-9]] (sometimes referred to as the Y1B-9 or YB-9), a 1931 United States Army Air Corps bomber * {{HMS|B9}}, a British Royal Navy B-class submarine * [[LNER Class B9]], a class of British steam locomotives * The former model name for the [[Subaru Tribeca]] ==Other uses== * [[Iceberg B-9]], a 1987 iceberg calved away from Antarctica * ''Model B-9'' on the TV series ''Lost in Space'', otherwise known simply as “[[Robot (Lost in Space)]]“ * An international standard paper size (44×62&nbsp;mm), defined in [[ISO 216]] {{Disambiguation}}