FISR
| Acronym | Definition |
|---|---|
| FISR | Fonds d'Intervention Stratégique Régional (French: Regional Strategic Intervention Fund; Canada) |
| FISR | Fondo Integrativo Speciale Ricerca (Italian: Integrative Special Research Fund) |
| FISR | Fédération Internationale Syndicaliste Révolutionnaire (French revolutionary organization) |
| FISR | Fault Isolation and Service Restoration |
| FISR | Fournitures Industrielles Services Rapides (French: Quick Services Industrial Supplies) |