| Abbreviation | Definition |
|---|---|
| IFFA | International Flash Fiction Association |
| IFFA | International Freight Forwarding Association |
| IFFA | International Frozen Food Association |
| IFLA | International Federation of libarary associations |
| IFLA | International Finance and Leasing Association |
| IFLA | International Function of Library Association |
| IFMA | International Foodservice Manufacturers Association |
| IFMSA | International Federation of Medical Student Associations |
| IFMSA | International Federation of Medical Students Associations |
| IFOA | Idaho Forest Owners Association |
| IFOA | International Family Office Association |
| IFOA | International Forward Osmosis Association |
| IFRA | Independent Footwear Retailers Association |
| IFRA | International Fire and Rescue Association |
| IFRA | International Fragrance Association |
| IFRA | International Furniture Rental Association |
| IFSA | International Feng Shui Association |
| IFSA | International Fire Sprinkler Association |
| IFSA | International Flight Services Association |
| IFSA | International Freeskiers and Snowboarders Association |