| IIFC | Idyllwild International Festival of Cinema 
| Others |
| IIFC | Indian Institutions and Fermilab Collaboration
| Others |
| IIFC | Indian Institutions Fermilab Collaboration
| Others |
| IIFC | Infrastructure Investment Facilitation Company
| Others |
| IIFC | Inhibition of Incoming Forwarded Calls
| Others |
| IIFC | International Institute for FRP in Construction
| Others |
| IIFC | Islamic International Foundation of Cooperation
| Others |
| IIFC | Istanbul International Financial Center
| Others |