FSB
- Bolivian Socialist Falange
- Brinjal fruit and shoot borer
- FSB (band)
- Farmer School of Business
- Fast syndrome-based hash
- Federal Security Service
- Federal savings bank
- Federation of Small Businesses
- Fellow of the Society of Biology
- Financial Services Board (South Africa)
- Financial Stability Board
- Fire support base
- First Somali Bank
- Fishbourne railway station
- Fortune Small Business
- Forward support battalion
- Friends School of Baltimore
- Front-side bus
- Fuqua School of Business
- FöreningsSparbanken
- Trade Union Social Citizens List