| Acronym | Definition |
|---|
| FEO➣Front-End Optimization (computer peformance) |
| FEO➣Firearms and Explosives Office (Philippines) |
| FEO➣For Each Other (photography group) |
| FEO➣Festivals and Events Ontario (Canada) |
| FEO➣Iron (II) Oxide (Ferrous Oxide) |
| FEO➣Fédération des Enseignantes et Enseignants de l'Ontario (French: Teachers' Federation of Ontario; Ontario, Canada) |
| FEO➣Fire Equipment Operator (firefighting) |
| FEO➣Faculty Enhancement Opportunity (University of Florida) |
| FEO➣Financial Executive Officer (various organizations) |
| FEO➣Florida Energy Office |
| FEO➣Federal Energy Office |
| FEO➣Familial Expansile Osteolysis |
| FEO➣For Exhibition Only |
| FEO➣Firearms Enquiry Officer (Civilian member of UK police force) |
| FEO➣Faculty Education Office (UK) |
| FEO➣Funeral Ethics Organization |
| FEO➣Find Everything Online (searchable advertising website) |
| FEO➣Foederatio Europea Orthodontica (European Federation of Orthodontics) |
| FEO➣Flexible Employment Option (various locations) |
| FEO➣Fire Engine Operator (California Dept of Forestry and Fire Protection) |
| FEO➣Fraternity Education Officer (Phi Mu Alpha) |
| FEO➣Facility Emergency Organization |
| FEO➣Forcible Entry Operations |
| FEO➣Field Engineering Order |
| FEO➣Field Engineering Office |
| FEO➣Forward Engagement Operations |
| FEO➣Flight Elements Office |
| FEO➣Fredrick Ernest Osborne (Canadian school) |
| FEO➣For the Estate Of |
| FEO➣Far East Office |
| FEO➣For Friends Eyes Only |
| FEO➣Financial Enforcement Office (Phoenix Municipal Court department) |
| FEO➣Fuel Efficiency Office (US Air Force Air Mobility Command) |