DFR

DFR may refer to:

• Cosworth DFR, a 1987 race car engine
• Dean Forest Railway A heritage railway in Gloucestershire, England
• Dihydroflavonol 4-reductase, an enzyme in the lignin metabolic pathway
• "Direction" Forward Routing, an ad-hoc routing protocol
• Divergence-from-randomness model, a probabilistic information retrieval model.
• Document Filing and Retrieval, an OSI protocol
• Dounreay Fast Reactor, the second reactor to achieve criticality in Dounreay, Scotland
• Digital Fault Recorder, measurement instrument recording power line faults in electrical substations

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