| Acronym | Definition |
|---|
| FNF | Fidelity National Financial |
| FNF | Friends and Family |
| FNF | Friday Night Fragfest (gaming) |
| FNF | Full and Final (financial settlements) |
| FNF | Friedrich Naumann Foundation |
| FNF | Friday Night Football (smartphone magazine application) |
| FNF | File Not Found |
| FNF | Friday Night Firefight |
| FNF | Fichier National Félin (French: National Feline File) |
| FNF | Forgiven, Not Forgotten |
| FNF | Fault Not Found |
| FNF | Fremont National Forest (Oregon) |
| FNF | Fast 'n Furious |
| FNF | Femoral Neck Fracture |
| FNF | Fastest Node First (algorithm) |
| FNF | Frags'n'fries (Battlefield gaming clan) |
| FNF | Finger Nose Finger |
| FNF | First National Financial Corporation (Toronto, Ontario, Canada) |
| FNF | Future of Numbering Forum |
| FNF | First Native Format (PCM) |
| FNF | Friends Never Forgotten |