| FISA | Federal Intelligence Surveillance Act 
| Others |
| FISA | Federated Irish Scouting Association
| Others |
| FISA | Federation Internationale du Sport Automobile
| Others |
| FISA | Federation Ivoirienne du Sport Automobile
| Others |
| FISA | Federation of Independent School Alumni
| Others |
| FISA | Federazione Italiana Scuderie Automobilistiche
| Others |
| FISA | Finance Industry Standards Association
| Others |
| FISA | Fitness Industry Suppliers Association
| Others |
| FISA | Flinders International Students Association
| Others |
| FISA | Food Industry Sanitation Auditor
| Others |
| FISA | Foreign Intelligence Security Act
| Others |
| FISA | Foreign Intelligence Service Act
| Others |
| FISA | Foreign Intelligence Survelliance Act
| Others |