| Abbreviation | Definition |
|---|---|
| FNAF3 | Five Nights at Freddy's 3 |
| FNAF4 | Five Nights at Freddy's 4 |
| FNAFB | FIve nIghts At F***boys |
| FNAFSL | Five Nights at Freddy's Sister Location |
| FNAFW | Five Nights at Freddy's World |
| FNAFWORLD | Five Nights at Freddy's World |
| FND | Fears No Death |
| FNF | Friday Night Firefight |
| FNG | Friday Night Gaming |
| FNO | Finding Neverland Online |
| FOBT | Fixed Odds Betting Terminals |
| FOC | Force Organization Chart |
| FOC | Forces Of Corruption |
| FOD | Forces Of Darkness |
| FOE | Forge Of Empires |
| FOF | Feet On Floor |
| FOF | Fist Of Fury |
| FOF | Friend Of Freak |
| FOG | Fanboy Otaku Gamer |
| FOG | of GAMING |