B9
B9, B- 9 and B 9 stands for:
- A chelating agent
- A grade of officials in Germany, see Senior Services
- A federal highway in Germany, see Federal Highway 9
- A former federal highway in Austria, see Bratislava street
- The U.S. experimental aircraft Boeing Y1B -9
- The standardized paper format (DIN 476/ISO 216)
- Folic acid, vitamin B9
- A nightclub in Aachen
- A Beistelltischsatz by Marcel Breuer produced by Thonet design around 1925/26,
- Disambiguation
- Abbreviation