FSA may refer to:

Companies[link]

• Financial Security Assurance, Inc., an American monoline insurance company
• FSA Corporation (formerly Freedman, Sharp, and Associates), a software firm acquired by McAfee Associates in 1996

Governmental agencies[link]

• Family Support Administration, now part of the United States Department of Health and Human Services
• Farm Security Administration (now the Farmers Home Administration), an American rural poverty agency known for its 1935–44 photography program
• Farm Service Agency, part of the United States Department of Agriculture
• Federal Security Agency, a United States government entity from 1935 to 1953
• Federal Student Aid, an office of the United States Department of Education
• Financial Services Agency, a Japanese regulator
• Financial Services Authority, a United Kingdom regulator
• Food Standards Agency, a United Kingdom regulator

Media[link]

• Flying Saucer Attack, an English space rock band
• The Legend of Zelda: Four Swords Adventures, a 2004 action-adventure video game

Organizations[link]

• Fabless Semiconductor Association, a promoter of the fabless business model
• Faculté des Sciences de l'Administration (Faculty of Business Studies), Laval University
• Florida Sheriffs Association, a non-profit professional association
• Florida Student Association, a non-partisan statewide organization of university students
• Food Science Australia, now known as the CSIRO Division of Food and Nutritional Science
• Free Spirit Alliance, an American non-profit organization serving the Pagan and Pantheist communities
• Free Syrian Army, the main opposition army group in Syria

Post-nominal letters[link]

• Fellow of the Society of Actuaries (North America)
• Fellow of the Society of Antiquaries of London
• Fellow of the Society of Antiquaries of Scotland (FSA Scot.)

Technology[link]

• Fast Statistical Alignment, bioinformatics software
• Finite State Automaton, or finite-state machine

Other uses[link]

• Federation of South Arabia, an organization of former British-protected states, now part of Yemen
• Financial statement analysis, the process of understanding the risk and profitability of a firm
• Flexible spending account, an employee benefit plan
• Forward Sortation Area, the first three characters of a Canadian postal code

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