NFFI
| Acronym | Definition |
|---|---|
| NFFI | Not Falling for It |
| NFFI | NATO Friendly Force Information |
| NFFI | Net Foreign Factor Income (economic measurement) |
| NFFI | National Farm Forest Inventory (est. 1998; Department of Agriculture, Fisheries and Forestry; Australia) |
| NFFI | New Futures Fund Initiative (Scotland, UK) |