| Acronym | Definition |
|---|
| GSA | General Services Administration (US government) |
| GSA | Girl Scouts of America |
| GSA | Geological Society of America |
| GSA | Google Search Appliance |
| GSA | Genetics Society of America |
| GSA | Gerontological Society of America |
| GSA | Graduate Student Association (Rice University, Houston Texas) |
| GSA | Glasgow School of Art |
| GSA | General Sales Agent |
| GSA | Government Services Administration |
| GSA | GNSS Supervisory Authority (European Satellite Navigation Agency, Brussels, Belgium) |
| GSA | Global Semiconductor Alliance (formerly Fabless Semiconductor Association) |
| GSA | GameSpy Arcade (multi-player gaming service) |
| GSA | Geological Society of Australia |
| GSA | Gay-Straight Alliance Network (since 1998) |
| GSA | Georgia Strait Alliance |
| GSA | Governor's School for the Arts |
| GSA | Geological Survey of Alabama |
| GSA | Game Spy Arcade (game utility) |
| GSA | Group Security Association |
| GSA | Government Services Agency |
| GSA | Genetic Sexual Attraction (adoption-related syndrome) |
| GSA | Gas Supply Agreement |
| GSA | Germany, Switzerland, Austria (licensing) |
| GSA | Goethe- und Schiller-Archiv |
| GSA | General Services Agreement |
| GSA | George Stevens Academy (Blue Hill, ME) |
| GSA | General Somatic Afferent (nerve) |
| GSA | Gwinnett Soccer Association (Lilburn, Georgia) |
| GSA | Game Sprite Archives (video games) |
| GSA | Gainesville Soccer Alliance (Florida, USA) |
| GSA | GameShark Advance (game hacking device) |
| GSA | Gay Student Alliance |
| GSA | Gateway Security Appliance (Symantec) |
| GSA | Giardia Specific Antigen (test for diagnosing giardiasis) |
| GSA | Guest Services Agent |
| GSA | Great Salinity Anomalies |
| GSA | Gas Suspension Absorber (part of CFB power plant) |
| GSA | Global Security Architecture |
| GSA | general support artillery (US DoD) |
| GSA | Grover Search Algorithm (quantum searching of databases) |
| GSA | Gale-Shapley Algorithm (input/output queuing) |
| GSA | Government Supply Agency |
| GSA | General Structural Analysis |
| GSA | Green Schools Alliance |
| GSA | Greater Shadow Armor (Asheron's Call game) |
| GSA | Georgia Society of Anesthesiologists |
| GSA | Game Show America |
| GSA | Garden Seed Association |
| GSA | Greater Shadow Amuli |
| GSA | General Somatic Afferents |
| GSA | Group Services Agreement |
| GSA | Goldfish Society of America (Fort Lauderdale, FL) |
| GSA | Good Shepard Academy |
| GSA | Global Software Application |
| GSA | Galvanised Steel Armour |
| GSA | General Survey Act of 1824 (authorized the president to use Army engineers to survey road & canal) |
| GSA | Guest Signature Activation |
| GSA | Generalized Significant Adiposity |