| Acronym | Definition |
|---|
| FHN➣Francis Howell North (Charles, MO) |
| FHN➣First Horizon National Corporation (Memphis, TN) |
| FHN➣Forest Hills Northern |
| FHN➣Freeport Health Network (Freeport, IL) |
| FHN➣Federatie Hondensport Nederland (Dutch: Dog Federation Netherlands) |
| FHN➣Foreningen for Human Narkotikapolitikk (Norwegian: Human Drug Policy Association; Oslo, Norway) |
| FHN➣Frequent Hemodialysis Network (study) |
| FHN➣Future Healthcare Network |
| FHN➣Finished Hex Nut |