| Acronym | Definition |
|---|
| DFN | Definition |
| DFN | Dope Fresh Nation |
| DFN | Dolce Far Niente |
| DFN | Double Frequency Network |
| DFN | Dual Flat No-Lead |
| DFN | Digital Freedom Network |
| DFN | Deutsches Forschungsnetz |
| DFN | Deafness |
| DFN | Dual Flat No-lead (electronics) |
| DFN | Discrete Fracture Network (geology/geophysics) |
| DFN | Day for Night (cinematography) |
| DFN | Dietetics, Foods and Nutrition (education; New York) |
| DFN | Divorced Fathers Network (est. 1998; peer support) |
| DFN | Dedicated Frogans Network |
| DFN | done for now |
| DFN | Define Normal (band) |
| DFN | Dysfunctional Family Night (SOAPnet TV channel) |
| DFN | Daily Flow Notification |