| Acronym | Definition |
|---|
| FSSS➣Fédération de la Santé et des Services Sociaux (French: Federation of Health and Human Services; Canada) |
| FSSS➣Free Super Saver Shipping (Amazon.com) |
| FSSS➣Foundation for the Scientific Study of Sexuality |
| FSSS➣Fédération Suisse de Sports Subaquatiques |
| FSSS➣Foreign Student and Scholar Services (University of Montana) |
| FSSS➣Fisher Sub Sieve Sizer |
| FSSS➣Fixed-Step Serial Search |
| FSSS➣Flight Software Support System |
| FSSS➣Field Software Service Support |
| FSSS➣Four Seasons Skiing & Snowboarding |
| FSSS➣Furnace Safeguard Supervision System (thermal power, steam boilers) |
| FSSS➣Fire Suppression Support Services (Willingboro, NJ) |