| FSNA | Federal Superannuates National Association 
| Others |
| FSNA | Florida School Nurses Association
| Others |
| FSNA | Florida School Nutrition Association, Inc. (formerly Florida School Food Service Association, Inc.)
| Others |
| FSNA | Forearm Sympathetic Nerve Activity
| Others |
| FSNA | Formation et Services Nord Atlantique (French: North Atlantic Training and Services)
| Others |
| FSNA | Franchise Services of North America
| Others |
| FSNA | Fry's Spring Neighborhood Association (Charlottesville, VA)
| Others |
| FSNA | Full Stack Network Associate (certification; Nexgent)
| Others |