FSB

FSB may refer to:

Government and politics

• Federal Security Service (Russian: Федеральная служба безопасности, Federal'naya Sluzhba Bezopasnosti)
• Bolivian Socialist Falange (Spanish: Falange Socialista Boliviana), a Bolivian political party
• Trade Union Social Citizens List, (Danish: Faglig Social Borgerliste), a Danish political group

Banking and finance

• Financial Stability Board, an international group of financial authorities
• Swedbank, formerly FöreningsSparbanken, a retail banking group
• Federal savings bank, a class of bank in the United States
• Financial Services Board (South Africa), a financial regulatory authority
• First Somali Bank

Education

• Farmer School of Business at Miami University in the U.S. state of Ohio
• Friends School of Baltimore, a Quaker institution in Baltimore
• Fuqua School of Business at Duke University in the U.S. state of North Carolina

Science and technology

• Front-side bus
• Fast syndrome-based hash
• Brinjal fruit and shoot borer (Leucinodes orbonalis), a moth species
• Fellow of the Society of Biology

Other uses

• FSB (band), a Bulgarian band
• Federation of Small Businesses, a British lobbying group
• Fire support base
• Fishbourne railway station, in England
• Foreign Service brat
• Fortune Small Business, a defunct magazine