| Acronym | Definition |
|---|
| DFI | Department of Financial Institutions (various US state governments) |
| DFI | Direct Fuel Injection |
| DFI | Deep Foundations Institute |
| DFI | Digital Fuel Injection |
| DFI | Development Fund for Iraq |
| DFI | Direct Foreign Investment |
| DFI | Development Finance Institution |
| DFI | Disease-Free Interval |
| DFI | Depository Financial Institution |
| DFI | Deutsch-Französisches Institut (German: German-French Institute; est. 1948) |
| DFI | Design for Innovation |
| DFI | Defiance, Ohio (Airport Code) |
| DFI | Development Flight Instrumentation |
| DFI | Demand for Information |
| DFI | Digital Facility Interface |
| DFI | Designated Financial Institution |
| DFI | Digital Filter Initialization |
| DFI | Design, Fabrication and Installation (various organizations) |
| DFI | Development Facilitators, Inc. |
| DFI | Data Field Identifier |
| DFI | Defense Forecasts Incorporated |
| DFI | Design, Fielding, Instrumentation |
| DFI | Data Flow Information |
| DFI | Diamond Flower Instrument |
| DFI | Decreased Fuel Ingestion |
| DFI | Deep Fried Ice-Cream |
| DFI | Design for Installability |
| DFI | Different Flipping Idea (polite form) |
| DFI | Discount From Invoice |
| DFI | Diagnostic Fault Isolation |
| DFI | Dyed Fuel Inspector |
| DFI | Département Fédéral de l'Intérieur (French: Federal Department of the Interior; Switzerland) |
| DFI | Digital Filmmaking Institute (various locations) |
| DFI | Diabetic Foot Infection |
| DFI | Digital Frog International (educational software; Ontario, Canada) |
| DFI | Demeures de France Investissements (French real estate company) |
| DFI | Dr Foster Intelligence (UK) |
| DFI | Déduction Fiscale pour Investissement (French: Tax Deduction for Investment) |
| DFI | Daniel Frères Immobilière (French: Daniel Brothers Real Estate; Luxembourg) |
| DFI | Dom Finance et Investissement (French investment company) |
| DFI | David Fraisse Impact (French employment consultancy) |
| DFI | Développement-Formation-Ingénierie (French: Development-Training-Engineering) |
| DFI | Détection Française d'Incendie (French smoke detector company) |