| IFFA | Impact Fund For Africa 
| Others |
| IFFA | Independent Florist Franchisee Association
| Others |
| IFFA | India Film Festival of Alberta
| Others |
| IFFA | Indigenous Flora and Fauna Association
| Others |
| IFFA | Interactive Flash Flood Analyzer
| Others |
| IFFA | International Family Forestry Alliance
| Others |
| IFFA | International Fashion Film Awards
| Others |
| IFFA | International Federation of Film Archives
| Others |
| IFFA | International Federation of Football Association
| Others |
| IFFA | International Film Festival on Aging
| Others |
| IFFA | International Flash Fiction Association
| Others |
| IFFA | International Fly Fishing Association
| Others |
| IFFA | International Frozen Food Association
| Others |
| IFFA | Iranian Film Festival Australia
| Others |
| IFFA | Iranian Football Fans Association
| Others |
| IFFA | Italian Flora Fauna Award
| Others |