| Abbreviation | Definition |
|---|---|
| RIFF | Resource Information File Format |
| RIFF | Resource Interchange Fle Format |
| RIFF | Resource Interschange File Format |
| RIFF | riffing |
| RIFFY | Riffem |
| RIFFY | riffów |
| RIFG | Research Institute for Fruit Growing |
| RIFG | right inferior frontal gyrus |
| RIFG | Rochester International Film Group |
| RIFJ | Right Inferior Frontal Junction |
| RIFL | Rifles |
| RIFLE | Risk Injury Failure Loss End |
| RIFR | Recordable Injury Frequency Rate |
| RIFR | Reportable Injury Frequency Rate |
| RIFRAF | Registry of Infamous and Famous Relatives in American Families |
| RIFS | Random Iterated Function System |
| RIFS | Remedial Investigation Feasibility Study |
| RIFS | Remedial Investigation/Feasibility Study |
| RIFS | Rothamsted International Fellowship Scheme |
| RIG | Rabies Immune Globulin |