FBS may refer to:

• Frederik Batti Sorring, known as FBS, Indonesian politician

• Faith Baptist School (disambiguation)
• France Business School, in France
• Friern Barnet School, in London
• Friends Boys' School, one of two Ramallah Friends Schools in the West Bank

• Failed back syndrome
• Fasting blood sugar
• Fetal bovine serum
• Frontiers in Bioscience, an academic journal
• Function-Behaviour-Structure ontology
• Lees-Haley Fake Bad Scale

• FBS Radio Network, Philippine radio network
• Federal Bureau of Statistics of the Government of Pakistan
• Fellow of the Burgon Society, in the United Kingdom
• Friday Harbor Seaplane Base, in Washington, United States
• Fukuoka Broadcasting System, a Japanese TV station
• Furness Building Society, a British financial institution
• NCAA Division I Football Bowl Subdivision, highest level of college football in the United States

• FB (disambiguation)