Other
- FS (musician), a musician
- French Southern Territories: FIPS PUB 10-4 territory code (excluding the Terre Adélie portion of Antarctica)
- Full Sail Real World Education, a university in Florida dedicated to real world education in the entertainment industry* Fine Structure
- Future Shop, Canada's largest online and brick and mortar consumer electronics retailer
- Franco's Spain, Francisco Franco's leadership of Spain
- For Sale (disambiguation), various meanings
- Federal Standard 595, a United States Federal standard used to define color shades
- Frankfurt School, a neo-Marxist school of social theory
- Frankfurt School of Finance & Management, a Business School in Frankfurt, Germany
- Flipnote Studio, a DSi software to make animtions
- Financial Secretary (Hong Kong)
- Femtosecond, an SI unit of time
- Frameshift mutation, a genetic mutation
- Femtosiemens, a measure of siemens (unit) an SI unit of electric conductance
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