| Acronym | Definition |
|---|
| FNO | Futures and Options (investment banking) |
| FNO | Fuoco Negli Occhi (Italian: Fire In Your Eyes) |
| FNO | From Now On |
| FNO | Fixed Network Operator (telephony) |
| FNO | Fresno (Amtrak station code; Fresno, CA) |
| FNO | Friday Night Out |
| FNO | Fédération Nationale des Orthophonistes (French: National Speech Federation) |
| FNO | Foreign National Offender (UK) |
| FNO | Foreign Network Operator |
| FNO | Festival Network Online (est. 1996) |
| FNO | For No One (Beatles song) |
| FNO | Fédération Nationale Ovine (French: National Sheep Federation) |
| FNO | Frozen Natural Orbital |
| FNO | For Nerds Only |
| FNO | Following Named Officer(s) |
| FNO | Foreign Namespace Object |
| FNO | Friends Night Out |
| FNO | Failure's No Option (athletic sportswear; Mesa, AZ) |
| FNO | Free Night Out (Texas A&M University Corps of Cadets) |
| FNO | Fleet Navigation Officer (Canada) |