| Acronym | Definition |
|---|
| IFFD➣International Firefighters Day (May 4th) |
| IFFD➣International Federation for Family Development |
| IFFD➣Interdisziplinäre Forschungsgemeinschaft Frankreich-Deutschland (German) |
| IFFD➣Internal Flows in a Free Drop (NASA) |
| IFFD➣Idaho Falls Fire Department (Idaho) |
| IFFD➣Intermittently Fed Fill and Draw System |
| IFFD➣Iowa Falls Family Dentistry (Iowa Falls, Iowa) |
| IFFD➣Institut Francophone de Full-Défense (French) |