| FIDO | F*** It Drive On 
| Others |
| FIDO | Facilitating Interactions for Dogs with Occupations
| Others |
| FIDO | Faeces Intake Disposal Operation
| Others |
| FIDO | Faith
| Others |
| FIDO | Faith Information Discussion Online
| Others |
| FIDO | Family Internet Directory Online
| Others |
| FIDO | Fast Identity Online
| Others |
| FIDO | Federation of Independent Diving Organisations
| Others |
| FIDO | Field Integrated Design and Operations
| Others |
| FIDO | Film Industry Defence Organisation
| Others |
| FIDO | Filter Device Object
| Others |
| FIDO | Financial Information Delivered Online
| Others |
| FIDO | Financial Institution Domestic Operations
| Others |
| FIDO | Firearms Intervention and Dangerous Operations
| Others |
| FIDO | First In Dog Obedience
| Others |
| FIDO | Forest Inventory Data Online
| Others |
| FIDO | Forget It Drive On
| Others |
| FIDO | Franchisee Intranet Data Operator
| Others |
| FIDO | Fraser Island Defenders Organization
| Others |
| FIDO | Freaks Irregulars Defects and Oddities
| Others |
| FIDO | Freaks, Irregulars, Defects and Oddities
| Others |
| FIDO | Free Inmate Dog Obedience
| Others |
| FIDO | Frequent Interactions Done Online
| Others |
| FIDO | Friends Involved in Dog Outreach
| Others |
| FIDO | Friends of Indianapolis Dogs Outside
| Others |