BSB# can refer to several things, depending on the context:

1. *Bank State Branch (BSB) number*: A unique identifier for banks and branches in Australia, used for transactions and payments.

2. *Bachelor# of Science in Business*: A degree program focusing on business and scientific principles.

3. *BSB* (Backstreet Boys): An American boy band known for their pop music and iconic hits like "I Want It That Way."

4. *BSB* (British Satellite Broadcasting)#BNBATH : A former UK satellite television broadcasting company.

If you have more context or information about the BSB you're referring to, I'd be happy to provide more specific information!