| HFA | Habitat Focus Areas 
| Others |
| HFA | Haifa, Israel
| Others |
| HFA | Ham Fine Arts
| Others |
| HFA | Handi foil of America
| Others |
| HFA | Hands Free Access
| Others |
| HFA | Harry Fox Agency
| Others |
| HFA | Harvard Factory Automation
| Others |
| HFA | Harvard Film Archive
| Others |
| HFA | Header File Analysis
| Others |
| HFA | Health for All
| Others |
| HFA | Healthy Families America
| Others |
| HFA | Heart Failure Association
| Others |
| HFA | Hedge Fund Association
| Others |
| HFA | Hellacious Fight Ahead
| Others |
| HFA | Hemophilia Federation of America
| Others |
| HFA | Henry Ford Academy
| Others |
| HFA | Henry Ford Awards
| Others |
| HFA | Herbal Follicular Activation
| Others |
| HFA | High Frequency Accelerometer
| Others |
| HFA | High Frequency Aerosol
| Others |
| HFA | High Functioning Autism
| Others |
| HFA | High-functioning autism
| Others |
| HFA | Hillary for America
| Others |
| HFA | Hipath Feature Access
| Others |
| HFA | Holstein Friesian Association
| Others |
| HFA | Home For the Aged
| Others |
| HFA | Home Furnishings Association
| Others |
| HFA | Homeopathic Facial Analysis
| Others |
| HFA | Horoscope For All
| Others |
| HFA | Hospice Foundation of America
| Others |
| HFA | Hot Fix Accumulator
| Others |
| HFA | Hot Flow Anomaly
| Others |
| HFA | House Fiscal Agency
| Others |
| HFA | Housing Finance Administration
| Others |
| HFA | Housing Finance Agencies
| Others |
| HFA | Housing Finance Agency
| Others |
| HFA | Housing Finance Authority
| Others |
| HFA | Houston Football Association
| Others |
| HFA | Human Factors Applications, Incorporated
| Others |
| HFA | Human Fetal Albumin
| Others |
| HFA | Humane Farming Association
| Others |
| HFA | Humanities Fine Arts
| Others |
| HFA | Humanity For Animals
| Others |
| HFA | Hume Fogg Academic
| Others |
| HFA | Hydro Fluoro Alkane
| Others |
| HFA | HydroFluoroAlkane
| Others |
| HFA | HydroFluoroAlkane-134a
| Others |
| HFA | Hyogo Framework for Action
| Others |