| FHS | Fabulous Home Sewn 
| Others |
| FHS | Faculty of Health Sciences
| Others |
| FHS | Fairfax High School
| Others |
| FHS | Fairfax Home School
| Others |
| FHS | Fairview High School
| Others |
| FHS | Faith and the Hebrew Scriptures
| Others |
| FHS | False Hope Syndrome
| Others |
| FHS | Familial Hamophagocytic Syndrome
| Others |
| FHS | Family and Human Services
| Others |
| FHS | Family Health Services
| Others |
| FHS | Family Heart Study
| Others |
| FHS | Family History Score
| Others |
| FHS | Family History Society
| Others |
| FHS | Family History Source
| Others |
| FHS | Fan Heat Sink
| Others |
| FHS | Fargo High School
| Others |
| FHS | Faribault High School
| Others |
| FHS | Farmington High School
| Others |
| FHS | Fayetteville High School
| Others |
| FHS | Fernley High School
| Others |
| FHS | Fetal Heart Sound
| Others |
| FHS | Fetal Heart Sounds
| Others |
| FHS | Fetal Hydantoin Syndrome
| Others |
| FHS | Fidnon High School
| Others |
| FHS | Fife High School
| Others |
| FHS | File Handling System
| Others |
| FHS | File Hierarchy Standard
| Others |
| FHS | Filesystem Heirarchy Standard
| Others |
| FHS | Filesystem Hierarchy Standard
| Others |
| FHS | Filesystem Hierarchy System
| Others |
| FHS | Find Hidden Service
| Others |
| FHS | Findlay High School
| Others |
| FHS | First Hop Security
| Others |
| FHS | Fishers High School
| Others |
| FHS | Fitzgerald High School
| Others |
| FHS | Flagstaff High School
| Others |
| FHS | Flanagan High School
| Others |
| FHS | Flathead High School
| Others |
| FHS | Floating Harbor Syndrome
| Others |
| FHS | Floppy Head Syndrome
| Others |
| FHS | Florence High School
| Others |
| FHS | Florida High School
| Others |
| FHS | Folsom High School
| Others |
| FHS | Fontainebleau High School
| Others |
| FHS | Food Hyper-Sensitivity
| Others |
| FHS | Foothill High School
| Others |
| FHS | For His Sake
| Others |
| FHS | For Historys Sake
| Others |
| FHS | Forest High School
| Others |
| FHS | Forest History Society
| Others |
| FHS | Format Handling System
| Others |
| FHS | Forward Heat Shield
| Others |
| FHS | Fostoria High School
| Others |
| FHS | Framingham Heart Study
| Others |
| FHS | Framingham High School
| Others |
| FHS | Frankfort High School
| Others |
| FHS | Franklin High School
| Others |
| FHS | Franz Hermle and Sohn
| Others |
| FHS | Frederick High School
| Others |
| FHS | Fredericksburg High School
| Others |
| FHS | Free Hand Sewing
| Others |
| FHS | Freedom High School
| Others |
| FHS | Freeport High School
| Others |
| FHS | Fremd High School
| Others |
| FHS | Fremont High School
| Others |
| FHS | French Historical Studies
| Others |
| FHS | Frenship High School
| Others |
| FHS | Frequency Hop Synchronization
| Others |
| FHS | Frequency Hopping System
| Others |
| FHS | Fresh Human Serum
| Others |
| FHS | Friendswood High School
| Others |
| FHS | Friesian Horse Society
| Others |
| FHS | Front Heated Seats
| Others |
| FHS | Fuckboy Hair Syndrome
| Others |
| FHS | Fuel Height Sensor
| Others |
| FHS | Fuel Hose
| Others |
| FHS | Fulton High School
| Others |
| FHS | Functional Health Status
| Others |