| Acronym | Definition |
|---|
| GFR | Glomerular Filtration Rate (renal system) |
| GFR | General Financial Rules (various organizations) |
| GFR | Gas-Cooled Fast Reactor (nuclear reactor) |
| GFR | Grand Funk Railroad (band) |
| GFR | Growth Factor Receptor |
| GFR | Global Formula Racing |
| GFR | Guaranteed Frame Rate |
| GFR | Glass Fiber Reinforced (molded plastics) |
| GFR | Gainesville Fire Rescue (Gainesville, Florida) |
| GFR | Grim File Reaper |
| GFR | Great American Financial Resources, Inc. |
| GFR | Gefreiter (German) |
| GFR | Gesellschaft für Regelungstechnik und Energieeinsparung mbH |
| GFR | Generic Fill Rate (medications) |
| GFR | Generic Fill Rate (Medicaid prescriptions) |
| GFR | Ground Fault Relay |
| GFR | Government Flight Representative |
| GFR | Groupe Fonciere des Régions (French) |
| GFR | Gesellschaft für Resourcenschutz (German: Society for Resource Protection) |
| GFR | Government Furnished Representative |
| GFR | Gas Facility Reporting |
| GFR | Ground and Flight Risk |
| GFR | Gap Filler Radar |
| GFR | Grain Filling Rate |
| GFR | General Functional Requirements |
| GFR | Geophysical Field Report (Canada) |
| GFR | General Flight Rules |
| GFR | Gas Filled Rectifier |
| GFR | German Family Rockers (gaming clan) |
| GFR | Graduate French Program |
| GFR | Gay for Real |
| GFR | Grunting, Flaring and Retracting (infant respiration) |