| Acronym | Definition |
|---|
| IDAF➣International Defence and Aid Fund (for Southern Africa) |
| IDAF➣Interior Design Associations Foundation (Jacksonville, FL) |
| IDAF➣Integrated Development of Artisanal Fisheries in West Africa (Food and Agriculture Organization; UN) |
| IDAF➣I've Done Action Films (gaming group) |
| IDAF➣Isthmus-Dependent Atrial Flutter |
| IDAF➣International Dwarf Athletics Federation |
| IDAF➣It Discussioni Auto Ford (Italian: Ford Auto Discussion It (Italy); online forum) |
| IDAF➣Interacting Distributed Approximating Function |