| Acronym | Definition |
|---|
| FSA | Flexible Spending Account (employee benefit offered by some companies) |
| FSA | FREEDOM (Freedom for Russia and Emerging Eurasian Democracies and Open Markets) Support Act of 1992 |
| FSA | Food Standards Agency (UK) |
| FSA | Farm Security Administration |
| FSA | Financial Services Authority |
| FSA | Full Speed Ahead (bicycle company) |
| FSA | Free Syrian Army |
| FSA | Financial Services Agency (Japan) |
| FSA | Farm Service Agency (USDA) |
| FSA | FEMA (Federal Emergency Management Agency)/State Agreement |
| FSA | Federal Student Aid |
| FSA | Financial Supervisory Authority |
| FSA | Fundaçao Santo André (Portuguese: St. Andrew Foundation; Brazil) |
| FSA | Fédération Suisse des Avocats (French: Swiss Federation of Lawyers; Switzerland) |
| FSA | Financial Services Act (UK) |
| FSA | Foundation Skills Assessment (British Columbia, Canada student testing) |
| FSA | Fuel Supply Agreement (various locations) |
| FSA | Financial Services Administration (various locations) |
| FSA | Faculté des Sciences de l'Administration (French: Faculty of Administration; Canada) |
| FSA | Fluid Sealing Association |
| FSA | Faculté des Sciences Agronomiques (French: Faculty of Agricultural Sciences; Bénin) |
| FSA | Food Security Act of 1985 |
| FSA | Fonds de Solidarité Africain (French: African Solidarity Fund) |
| FSA | File System Archiving (computing) |
| FSA | Fabless Semiconductor Association (now Global Semiconductor Alliance) |
| FSA | Full Service Airline |
| FSA | Food Safety Act 1990 (UK) |
| FSA | Forward Sortation Area |
| FSA | First Service Application |
| FSA | Free Software Association |
| FSA | Financial Services and Analysis |
| FSA | First Step Assistant |
| FSA | File Staging Area |
| FSA | Fellow of the Society of Actuaries |
| FSA | Finite State Automaton |
| FSA | Financial Statement Analysis |
| FSA | Family Separation Allowance |
| FSA | Feature Selection Algorithm |
| FSA | Food Services of America |
| FSA | Fluidic Self Assembly |
| FSA | Forest School Association (UK) |
| FSA | Financial Security Assurance, Inc. |
| FSA | Formal Safety Assessment |
| FSA | Flextronics (Shah Alam) Sdn Bhd |
| FSA | Fédération Suisse des Aveugles et Malvoyants (French: Swiss Federation of the Blind and Visually Impaired; Switzerland) |
| FSA | Family Support Agency (Ireland) |
| FSA | Financial Supervisory Agency (Japan) |
| FSA | Foundation for Sustainable Agriculture |
| FSA | Field Service Automation |
| FSA | Fellow of the Society of Antiquaries |
| FSA | Facility Security Assessment |
| FSA | Firm-Specific Advantage |
| FSA | Federal Space Agency (Russia) |
| FSA | Fire Station Alerting (software) |
| FSA | Federal Security Agency |
| FSA | Fulton Sunshine Academy (Roswell, GA) |
| FSA | Fox Studios Australia |
| FSA | Fire Services Administration (various schools) |
| FSA | Florida Staffing Association |
| FSA | Financial Service Agreement (World Trade Organization) |
| FSA | Finnish Service Alliance |
| FSA | Farm Safety Association |
| FSA | Film South Asia (est. 1997) |
| FSA | Filemaker Solutions Alliance (developer membership program offered by FileMaker Inc) |
| FSA | Fertility Society of Australia |
| FSA | Food Security Assessment |
| FSA | Fraternity & Sorority Affairs (various schools) |
| FSA | Financial Systems Administration (various schools) |
| FSA | Federation of South Arabia (est. 1963; now Yemen) |
| FSA | Fish Spawning Aggregation (reproduction) |
| FSA | Faculty, Staff, Administration (education) |
| FSA | Faculté des Sciences Appliquées (Belgium, engineering schools) |
| FSA | Filipino Student Association |
| FSA | Forum Social Africain |
| FSA | Free Software Alliance |
| FSA | Family Services Association |
| FSA | Four Swords Adventures (game) |
| FSA | Federal Savings Association |
| FSA | Florida Sheriffs Association |
| FSA | Free Standing Applique (embroidery) |
| FSA | Fujitsu Semiconductor America, Inc. (est. 1979; Sunnyvale, CA) |
| FSA | Foreign Student Advisor (university) |
| FSA | Full Spectrum Approach (Native Remedies) |
| FSA | Florida Space Authority |
| FSA | Functional Solutions Analysis |
| FSA | Future-State Architecture |
| FSA | Fee Simple Absolute (property law) |
| FSA | Faculty/Staff Appreciation (various schools) |
| FSA | Florida Society of Anesthesiologists |
| FSA | Fire Suppression Assistance |
| FSA | Florida Student Association |
| FSA | Forestry South Africa |
| FSA | Food Service Attendant |
| FSA | Free Speech Advocate |
| FSA | Fingerprint Sharing Alliance (coalition of telecom companies to combat cyber attacks) |
| FSA | Funding Standard Account |
| FSA | Floating Storage Offloading Vessel (oil industry) |
| FSA | Faldo Series Asia (golf) |
| FSA | Fire Support Area |
| FSA | Family Service America |
| FSA | Federal Security Administration |
| FSA | Faculty Service Area |
| FSA | Film Stills Archive (Museum of Modern Art; New York, NY) |
| FSA | Fuel Storage Area |
| FSA | Forensic Science Agency of Northern Ireland |
| FSA | Forming Steel Type A |
| FSA | Field Support Activity |
| FSA | Furukawa-Sky Aluminum (Japan) |
| FSA | Force Structure Allowance |
| FSA | Farm Security Agency |
| FSA | Florida Shuffleboard Association |
| FSA | Florida Storytelling Association |
| FSA | Force Structure Announcement (US Air Force) |
| FSA | Facilities Radiological Safety and Safeguards Branch (US FEMA) |
| FSA | Flexible Staffing Arrangement (various locations) |
| FSA | Financially Significant Application |
| FSA | Fanuc South Africa (equipment) |
| FSA | Fabricom Système d'Assemblage (French: Fabricom Assembly System) |
| FSA | Free Spirit Alliance (religious network) |
| FSA | Finnish Society of Automation |
| FSA | Forward Support Area |
| FSA | Field Service Action (Ford Motor Company) |
| FSA | Florida Statutes Annotated |
| FSA | Forward Sorting Area (part of Canadian Postal Code) |
| FSA | Folded-Slot Antenna |
| FSA | Foreign Sales Agent |
| FSA | Federal Seed Act of 1939 |
| FSA | Framework Study Areas |
| FSA | Fourier Series Analysis |
| FSA | Food Service Agency |
| FSA | First Sergeants Academy |
| FSA | Functional Systems Audit |
| FSA | Final Site Acceptance |
| FSA | Foreign Systems Acquisition |
| FSA | Foreign Service Allowances (UK) |
| FSA | Flow Survey Apparatus |
| FSA | Functional Systems Administrator |
| FSA | Faculty Study Abroad |
| FSA | Floating Suction Arm |
| FSA | Firing Set Assay |
| FSA | Faculty Student Adviser (various locations) |
| FSA | Functional Support Agreement |
| FSA | Force Structure Assessment |
| FSA | Foreign Service Availability |
| FSA | Forward Section Assembly |
| FSA | Fire Safety Administrator |
| FSA | Fuel Systems Analysis |
| FSA | Forest Stewardship Act of 1990 |
| FSA | Favorite Song of the Album |
| FSA | Finnish Society of Anesthesiologists |
| FSA | Field Systemic Advocacy (US IRS) |
| FSA | Fabric Salesmen's Association (New York, NY) |
| FSA | Fighter Support Aircraft (US DoD) |