| Abbreviation | Definition |
|---|---|
| FRS | Federal Reserve System |
| FRTIB | Federal Retirement Thrift Investment Board |
| FS | Federal Standard |
| FS | Federal Standard (U.S.) |
| FS | Funding Strategies |
| FSA | Farm Security Administration |
| FSA | Farm Service Agency ( U. S. Department of Agriculture) |
| FSA | Federal Crop Insurance Corporation |
| FSA | Freedom Support Act |
| FSAB | Foreign Scientists Assistance Branch |
| FSAH | Federal Student Aid Handbook |
| FSAP | Financial Sector Assessment Program |
| FSAR | Forest Service Acquisition Regulation |
| FSBS | Fund for Small Business Support |
| FSC | Federal Shariat Court |
| FSC | Federal Supply Class |
| FSC | Federal Supply Classes |
| FSD | Full Scale Development life cycle phase |
| FSIP | Federal Service Impasses Panel |
| FSIS | Food Safety and Inspection Service |