| Acronym | Definition |
|---|
| FSG | Farrar, Straus and Giroux (book publishers) |
| FSG | Financial Services Guide (various organizations) |
| FSG | Financial Services Group (various organizations) |
| FSG | Free Standards Group (nonprofit organization promoting open source software standards) |
| FSG | Financial Solutions Group (various locations) |
| FSG | Formula Student Germany (racecar competition) |
| FSG | Foundation Strategy Group (Boston, MA) |
| FSG | Fédération Suisse de Gymnastique (French: Swiss Gymnastics Federation; Switzerland) |
| FSG | Focal Segmental Glomerulosclerosis |
| FSG | Free Standards Group |
| FSG | Finite State Grammar |
| FSG | First Storage Group |
| FSG | Flame Safe Guard (burners) |
| FSG | Federal Supply Group |
| FSG | French Sarcoma Group (clinical study) |
| FSG | Faculté des Sciences de Gabès (French: Gabès School of Science; Gabès, Tunisia) |
| FSG | Fundacíon Secretariado Gitano (Spanish: Gypsy Secretariat Foundation; Spain) |
| FSG | Fish Skin Gelatin |
| FSG | Full Service Gross (real estate leases) |
| FSG | First Security Group (Tennessee) |
| FSG | Frequent Subgraph Discovery (algorithms) |
| FSG | Financial Sponsors Group (various organizations) |
| FSG | Family Support Group |
| FSG | Financial Statement Generator (Oracle) |
| FSG | Facility Service GmbH (Germany) |
| FSG | Force Support Group (various armed forces) |
| FSG | First Sergeant |
| FSG | Frères de Saint-Gabriel (French: Brothers of Saint Gabriel) |
| FSG | Finite State Grammar (linguistics) |
| FSG | Fire Support Group |
| FSG | Falling Sand Game |
| FSG | Fleet Support Group (UK company) |
| FSG | Finger Stick Glucose |
| FSG | Faculty Study Group (various universities) |
| FSG | Fronde Systems Group (various locations) |
| FSG | Federal Stock Group |
| FSG | Fluorinated Silica Glass |
| FSG | Faith Sharing Group (various locations) |
| FSG | Fairmont Specialty Group (insurance; Houston, TX) |
| FSG | Flexible Solution Group (various locations) |
| FSG | Field Services Group |
| FSG | Federal Surveillance Group (fictional organization; Scorpion TV series) |
| FSG | Fixed Spreading Gain |
| FSG | Federated Software Group, Inc. |
| FSG | Format Standard Generalized Markup Language |
| FSG | Food Study Group (World Food Programme UN) |
| FSG | Facilitated Study Group (academics) |
| FSG | Forward Support Group |
| FSG | Foursquare Gospel |
| FSG | First State Group (Australia) |
| FSG | French School Girls (gaming clan) |
| FSG | Federalnaya Sluzhba Granitsy (Russian: Federal Border Service) |