| OFI | Ocean Frontier Institute 
| Others |
| OFI | Odometer Fraud Investigation
| Others |
| OFI | Office for Family Independence
| Others |
| OFI | Office Furniture Innovations
| Others |
| OFI | Office Furniture Installers
| Others |
| OFI | Office of Falcon Intel
| Others |
| OFI | Office of Fellowships and Internships
| Others |
| OFI | Office of Financial Institutions
| Others |
| OFI | Oils and Fats International
| Others |
| OFI | Omilos Filathlon Irakleiou
| Others |
| OFI | Omilos Filathlon Irakliou (Greek soccer team)
| Others |
| OFI | Online Funding Inquiry
| Others |
| OFI | Open Fabrics Interfaces
| Others |
| OFI | Open For Inspection
| Others |
| OFI | Open For Interpretation
| Others |
| OFI | Operational Flight Instrumentation
| Others |
| OFI | Opportunities for Improvement
| Others |
| OFI | Opportunity For Improvement
| Others |
| OFI | Opportunity For Independence
| Others |
| OFI | Optical Fiber Identifier
| Others |
| OFI | Optical Fiber Installation
| Others |
| OFI | Optimal Functioning Institute
| Others |
| OFI | Orangutan Foundation International
| Others |
| OFI | Oregon Fuel Injection
| Others |
| OFI | Organic Food Incubator
| Others |
| OFI | Ornamental Fish International
| Others |
| OFI | Other Financial Institution
| Others |
| OFI | Other Financial Institutions
| Others |
| OFI | Other Financial Intermediaries
| Others |
| OFI | Ouango Fitini Airport
| Others |
| OFI | Ouango Fitini, Cote d'Ivoire
| Others |
| OFI | Outlook For Hospitals
| Others |
| OFI | Overall Flexibility Index
| Others |
| OFI | Owner Furnished Improvements
| Others |
| OFI | Owner Furnished Items
| Others |