| Acronym | Definition |
|---|
| FSA | Flexible Spending Account (employee benefit offered by some companies) |
| FSA | Food Standards Agency (UK) |
| FSA | Farm Security Administration |
| FSA | Full Speed Ahead (bicycle company) |
| FSA | Financial Supervisory Authority |
| FSA | Financial Services Act (UK) |
| FSA | Foundation Skills Assessment (British Columbia, Canada student testing) |
| FSA | Fluid Sealing Association |
| FSA | Food Security Act of 1985 |
| FSA | Fabless Semiconductor Association (now Global Semiconductor Alliance) |
| FSA | Food Safety Act 1990 (UK) |
| FSA | Forward Sortation Area |
| FSA | Fellow of the Society of Actuaries |
| FSA | Finite State Automaton |
| FSA | Financial Statement Analysis |
| FSA | Family Separation Allowance |
| FSA | Food Services of America |
| FSA | Fluidic Self Assembly |
| FSA | Financial Security Assurance, Inc. |
| FSA | Formal Safety Assessment |
| FSA | Flextronics (Shah Alam) Sdn Bhd |
| FSA | Financial Supervisory Agency (Japan) |
| FSA | Field Service Automation |
| FSA | Fellow of the Society of Antiquaries |
| FSA | Federal Space Agency (Russia) |
| FSA | Federal Security Agency |
| FSA | Florida Staffing Association |
| FSA | Farm Safety Association |
| FSA | Filemaker Solutions Alliance (developer membership program offered by FileMaker Inc) |
| FSA | Fertility Society of Australia |
| FSA | Food Security Assessment |
| FSA | Faculté des Sciences Appliquées (Belgium, engineering schools) |
| FSA | Filipino Student Association |
| FSA | Family Services Association |
| FSA | Four Swords Adventures (game) |
| FSA | Federal Savings Association |
| FSA | Florida Sheriffs Association |
| FSA | Foreign Student Advisor (university) |
| FSA | Florida Space Authority |
| FSA | Functional Solutions Analysis |
| FSA | Fee Simple Absolute (property law) |
| FSA | Florida Society of Anesthesiologists |
| FSA | Forestry South Africa |
| FSA | Florida Student Association |
| FSA | Food Service Attendant |
| FSA | Fingerprint Sharing Alliance (coalition of telecom companies to combat cyber attacks) |
| FSA | Funding Standard Account |
| FSA | Fire Support Area |
| FSA | Family Service America |
| FSA | Federal Security Administration |
| FSA | Faculty Service Area |
| FSA | Fuel Storage Area |
| FSA | Forensic Science Agency of Northern Ireland |
| FSA | Force Structure Allowance |
| FSA | Field Support Activity |
| FSA | Farm Security Agency |
| FSA | Florida Shuffleboard Association |
| FSA | Florida Storytelling Association |
| FSA | Free Spirit Alliance (religious network) |
| FSA | Finnish Society of Automation |
| FSA | Field Service Action (Ford Motor Company) |
| FSA | Forward Support Area |
| FSA | Forward Sorting Area (part of Canadian Postal Code) |
| FSA | Florida Statutes Annotated |
| 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 | Floating Suction Arm |
| FSA | Faculty Study Abroad |
| FSA | Functional Systems Administrator |
| FSA | Firing Set Assay |
| FSA | Functional Support Agreement |
| FSA | Forward Section Assembly |
| FSA | Foreign Service Availability |
| FSA | Force Structure Assessment |
| FSA | Fire Safety Administrator |
| FSA | Forest Stewardship Act of 1990 |
| FSA | Fuel Systems Analysis |
| FSA | Favorite Song of the Album |
| FSA | Finnish Society of Anesthesiologists |
| FSA | Field Systemic Advocacy (US IRS) |
| FSA | Fighter Support Aircraft (US DoD) |
| FSA | Fabric Salesmen's Association (New York, NY) |
| FSA | Free Speech Advocate |
| FSA | Faculty/Staff Appreciation (various schools) |
| FSA | File System Archiving (computing) |
| FSA | Financial Service Agreement (World Trade Organization) |
| FSA | Full Spectrum Approach (Native Remedies) |
| FSA | Financial Services Agency (Japan) |
| FSA | Faculty, Staff, Administration (education) |
| FSA | FREEDOM (Freedom for Russia and Emerging Eurasian Democracies and Open Markets) Support Act of 1992 |
| FSA | Federal Student Aid |
| FSA | Fox Studios Australia |
| FSA | Farm Service Agency (USDA) |
| FSA | Financial Services Authority |