| Acronym | Meaning |
 | EM | Office Of Environmental Management |
| EML | Environmental Measurement Laboratory |
| ENC | Eisenhower National Clearinghouse |
| EO | Executive Order |
| EOIR | Executive Office For Immigration Review |
| EOUSA | Executive Office For United States Attorneys |
| EOWS | Executive Office Of Weed And Seed |
| EPA | Environmental Protection Agency |
| EREN | Energy Efficiency And Renewable Energy Network |
| ERIC | Educational Resources Information Center |
| ERL | Environmental Research Laboratories (absorbed By OAR Or NOAA Research) |
| EROD | Education Resource Organizations Directory |
| ERS | Economic Research Service |
| ESA | Employment Standards Administration; Economics And Statistics Administration |
| ESDIM | Environmental Services Data And Information Management |
| ETA | Employment And Training Administration |
| EX-IM BANK | Export-Import Bank Of The United States |
| FAA | Federal Aviation Administration |
| FANNIE MAE | Federal National Mortgage Association |
| FAO | Food And Agriculture Organization |
| FAPRS | Federal Assistance Programs Retrieval System ˜˜(replaced By CFDA) |
| FAR | Federal Acquisition Regulation |
| FARMER MAC | Federal Agricultural Mortgage Corporation |
| FAS | Foreign Agricultural Service |
| FASAB | Federal Accounting Standards Advisory Board |
| FBCI | Faith-Based And Community Initiatives |
| FBI | Federal Bureau Of Investigation |
| FBIS | Foreign Broadcast Information Service (see WNC) |
| FCA | Farm Credit Administration |
| FCC | Federal Communications Commission |
| FCIC | Federal Consumer Information Center; Federal Crop Insurance Corporation |
| FDA | Food And Drug Administration |
| FDIC | Federal Deposit Insurance Corporation |
| FEB | Federal Executive Board |
| FEC | Federal Election Commission |
| FEDIX | Federal Information Exchange Inc. (ceased Operation 7/3/02) |
| FEDRIP | Federal Research In Progress Database |
| FEMA | Federal Emergency Management Agency |
| FERC | Federal Energy Regulatory Commission |
| FERMILAB | Fermi National Accelerator Laboratory |
| FETC | Federal Energy Technology Center (changed To NETL) |
| FFB | Federal Financing Bank |
| FHA | Federal Housing Administration |
| FHFB | Federal Housing Finance Board |
| FHWA | Federal Highway Administration |
| FIA | Federal Insurance Administration |
| FINCEN | Financial Crimes Enforcement Network |
| FIPS | Federal Information Processing Standard |
| FJC | Federal Judicial Center |
| FLC | Federal Laboratory Consortium |
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