IFFD
| 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) |