| Deletion Induced Filamentation | Academic & Science |
| Detroit Iron Foundry | Business |
| Dearborn Industrial Factory | Business |
| Dearborn Iron Foundry | Business |
| Detroit International Foundry | Business |
| Depositors Insurance Fund | Business |
| Directorate of Institutional Finance | Business |
| Diocesan Investment Fund | Business |
| Deposit Insurance Fund | Business |
| Digital Innovation Forum | Community |
| Digital Innovation Festival | Community |
| Digital Interoperability Forum | Community |
| Disruptive Innovation Festival | Community |
| Delusional Idiots Forum | Community |
| Data Interface Facility | Computing |
| Differential Item | Computing |
| Document Interchange Format | Computing |
| Device Input Format | Computing |
| Discovery Informatics Framework | Computing |
| Detector Interface | Computing |
| Data and Information Fusion | Computing |
| Driver Install Frameworks | Computing |
| Data Interchange Format - Database | File Type |
| Patch Script Difference Data File | File Type |
| Os/2 Display Information File | File Type |
| Digitally Improvized Format | File Type |
| Distributed Instruction Framework | General |
| Decentralized Identity Foundation | General |
| Divisional Instructional Facilitator | General |
| Digital Imaging Facility | General |
| Designated Inspection Facilities | General |
| District Improvement Financing | General |
| Digital Interface Format | General |
| Difficulty Importance Frequency | General |
| Dynamix Interior File | General |
| Demolition italian force | General |
| Decimation In Frequency | General |
| Data Integrity Field | Information Technology |
| Dange Im Fohraus | International |
| Desarrollo Integral de la Familia | International |
| Discriminant Index Function | Maths |
| Differential Item Functioning | Maths |
| Discriminate Information Function | Maths |
| Discrete Inverse Fourier | Maths |
| Difference In Fahrenheit | Measurement Unit |
| Disability Income Fellow | Medical |
| Dairy Industry Federation | Medical |
| Directory Interchange Format | Networking |
| Data Interchange Format | Networking |
| Development Impact Fee | Real Estate |
| Difference | Space Science |
| Discrete Increment Filter | Space Science |
| Danmarks Idraets Forbund | Sports |
