FST

• Finlands Svenska Television, now Yle Fem, the Swedish-language department of the Finnish Broadcasting Company
• Florida Studio Theatre, in Sarasota, Florida, United States
• Free Southern Theater, in Mississippi, United States

• Fixation index (F_ST), in population genetics
• Follistatin, a mammalian glycoprotein (and gene)

• Franciscan School of Theology, in California, United States
• French School of Thessaloniki, in Greece
• The interdisciplinary field of food science and technology

• Fermanagh and South Tyrone (Assembly constituency), in Northern Ireland
• Fermanagh and South Tyrone (UK Parliament constituency), in Northern Ireland
• Financial Secretary to the Treasury, of the United Kingdom
• Foreign Sports Talent Scheme, of Singapore

• Fire Support Team of the Royal Artillery
• Fleet Survey Team of the United States Navy
• Forward surgical teams of the United States Army

• Feature Selection Toolbox, machine learning software
• File Streaming Technology, a digital audio format
• Finite-state transducer
• Full-Scale Tunnel, a demolished NASA wind tunnel

• Fenchurch Street railway station, in London
• First Stop Travel, a Scottish bus operator
• Fort Stockton–Pecos County Airport, in Texas, United States
• Sint-Truiden railway station, in Belgium

• Family Survival Trust, in the United Kingdom
• Foundation for Science and Technology, in the United Kingdom
• Field sobriety testing
• Fiji Standard Time

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